diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 5c0163bf8e..be15b0a507 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,7 +1,7 @@
 ## References
 _Add references/links to any related issues or PRs. These may include:_
-* Fixes [GitHub issue](https://github.com/DSpace/dspace-angular/issues), if any
-* Requires [REST API PR](https://github.com/DSpace/DSpace/pulls), if any
+* Fixes #[issue-number]
+* Requires DSpace/DSpace#[pr-number] (if a REST API PR is required to test this)
 
 ## Description
 Short summary of changes (1-2 sentences).
diff --git a/src/app/+admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.spec.ts b/src/app/+admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.spec.ts
index 2f3f88fa70..6436f2d873 100644
--- a/src/app/+admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.spec.ts
+++ b/src/app/+admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.spec.ts
@@ -18,6 +18,7 @@ import { WorkflowItemSearchResult } from '../../../../../shared/object-collectio
 import { BitstreamDataService } from '../../../../../core/data/bitstream-data.service';
 import { createSuccessfulRemoteDataObject$ } from '../../../../../shared/remote-data.utils';
 import { getMockLinkService } from '../../../../../shared/mocks/link-service.mock';
+import { of as observableOf } from 'rxjs';
 
 describe('WorkflowItemAdminWorkflowGridElementComponent', () => {
   let component: WorkflowItemSearchResultAdminWorkflowGridElementComponent;
@@ -50,7 +51,9 @@ describe('WorkflowItemAdminWorkflowGridElementComponent', () => {
         ],
         providers: [
           { provide: LinkService, useValue: linkService },
-          { provide: TruncatableService, useValue: {} },
+          { provide: TruncatableService, useValue: {
+              isCollapsed: () => observableOf(true),
+            } },
           { provide: BitstreamDataService, useValue: {} },
         ],
         schemas: [NO_ERRORS_SCHEMA]
diff --git a/src/app/+bitstream-page/bitstream-page.resolver.ts b/src/app/+bitstream-page/bitstream-page.resolver.ts
index 8e9f64fcc1..9c85688c39 100644
--- a/src/app/+bitstream-page/bitstream-page.resolver.ts
+++ b/src/app/+bitstream-page/bitstream-page.resolver.ts
@@ -6,6 +6,7 @@ import { find } from 'rxjs/operators';
 import { hasValue } from '../shared/empty.util';
 import { Bitstream } from '../core/shared/bitstream.model';
 import { BitstreamDataService } from '../core/data/bitstream-data.service';
+import {followLink, FollowLinkConfig} from '../shared/utils/follow-link-config.model';
 
 /**
  * This class represents a resolver that requests a specific bitstream before the route is activated
@@ -23,9 +24,20 @@ export class BitstreamPageResolver implements Resolve<RemoteData<Bitstream>> {
    * or an error if something went wrong
    */
   resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<RemoteData<Bitstream>> {
-    return this.bitstreamService.findById(route.params.id)
+    return this.bitstreamService.findById(route.params.id, ...this.followLinks)
       .pipe(
         find((RD) => hasValue(RD.error) || RD.hasSucceeded),
       );
   }
+    /**
+     * Method that returns the follow links to already resolve
+     * The self links defined in this list are expected to be requested somewhere in the near future
+     * Requesting them as embeds will limit the number of requests
+     */
+    get followLinks(): Array<FollowLinkConfig<Bitstream>> {
+        return [
+            followLink('bundle', undefined, true, followLink('item')),
+            followLink('format')
+        ];
+    }
 }
diff --git a/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.spec.ts b/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.spec.ts
index c802622dc4..ce46c2a7b3 100644
--- a/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.spec.ts
+++ b/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.spec.ts
@@ -4,7 +4,7 @@ import { TranslateModule } from '@ngx-translate/core';
 import { RouterTestingModule } from '@angular/router/testing';
 import { RemoteData } from '../../core/data/remote-data';
 import { of as observableOf } from 'rxjs/internal/observable/of';
-import { ActivatedRoute } from '@angular/router';
+import {ActivatedRoute, Router} from '@angular/router';
 import { DynamicFormControlModel, DynamicFormService } from '@ng-dynamic-forms/core';
 import { NotificationsService } from '../../shared/notifications/notifications.service';
 import { BitstreamDataService } from '../../core/data/bitstream-data.service';
@@ -22,6 +22,11 @@ import { PageInfo } from '../../core/shared/page-info.model';
 import { FileSizePipe } from '../../shared/utils/file-size-pipe';
 import { RestResponse } from '../../core/cache/response.models';
 import { VarDirective } from '../../shared/utils/var.directive';
+import {
+  createSuccessfulRemoteDataObject$
+} from '../../shared/remote-data.utils';
+import {RouterStub} from '../../shared/testing/router.stub';
+import { getItemEditRoute } from '../../+item-page/item-page-routing-paths';
 
 const infoNotification: INotification = new Notification('id', NotificationType.Info, 'info');
 const warningNotification: INotification = new Notification('id', NotificationType.Warning, 'warning');
@@ -34,6 +39,8 @@ let bitstreamFormatService: BitstreamFormatDataService;
 let bitstream: Bitstream;
 let selectedFormat: BitstreamFormat;
 let allFormats: BitstreamFormat[];
+let router: Router;
+let routerStub;
 
 describe('EditBitstreamPageComponent', () => {
   let comp: EditBitstreamPageComponent;
@@ -105,7 +112,12 @@ describe('EditBitstreamPageComponent', () => {
       format: observableOf(new RemoteData(false, false, true, null, selectedFormat)),
       _links: {
         self: 'bitstream-selflink'
-      }
+      },
+      bundle: createSuccessfulRemoteDataObject$({
+        item: createSuccessfulRemoteDataObject$({
+          uuid: 'some-uuid'
+        })
+      })
     });
     bitstreamService = jasmine.createSpyObj('bitstreamService', {
       findById: observableOf(new RemoteData(false, false, true, null, bitstream)),
@@ -118,6 +130,10 @@ describe('EditBitstreamPageComponent', () => {
       findAll: observableOf(new RemoteData(false, false, true, null, new PaginatedList(new PageInfo(), allFormats)))
     });
 
+    const itemPageUrl = `fake-url/some-uuid`;
+    routerStub = Object.assign(new RouterStub(), {
+      url: `${itemPageUrl}`
+    });
     TestBed.configureTestingModule({
       imports: [TranslateModule.forRoot(), RouterTestingModule],
       declarations: [EditBitstreamPageComponent, FileSizePipe, VarDirective],
@@ -127,6 +143,7 @@ describe('EditBitstreamPageComponent', () => {
         { provide: ActivatedRoute, useValue: { data: observableOf({ bitstream: new RemoteData(false, false, true, null, bitstream) }), snapshot: { queryParams: {} } } },
         { provide: BitstreamDataService, useValue: bitstreamService },
         { provide: BitstreamFormatDataService, useValue: bitstreamFormatService },
+        { provide: Router, useValue: routerStub },
         ChangeDetectorRef
       ],
       schemas: [NO_ERRORS_SCHEMA]
@@ -138,6 +155,7 @@ describe('EditBitstreamPageComponent', () => {
     fixture = TestBed.createComponent(EditBitstreamPageComponent);
     comp = fixture.componentInstance;
     fixture.detectChanges();
+    router = (comp as any).router;
   });
 
   describe('on startup', () => {
@@ -213,4 +231,25 @@ describe('EditBitstreamPageComponent', () => {
       });
     });
   });
+  describe('when the cancel button is clicked', () => {
+    it('should call navigateToItemEditBitstreams method', () => {
+      spyOn(comp, 'navigateToItemEditBitstreams');
+      comp.onCancel();
+      expect(comp.navigateToItemEditBitstreams).toHaveBeenCalled();
+    });
+  });
+  describe('when navigateToItemEditBitstreams is called, and the component has an itemId', () => {
+    it('should redirect to the item edit page on the bitstreams tab with the itemId from the component', () => {
+      comp.itemId = 'some-uuid1'
+      comp.navigateToItemEditBitstreams();
+      expect(routerStub.navigate).toHaveBeenCalledWith([getItemEditRoute('some-uuid1'), 'bitstreams']);
+    });
+  });
+  describe('when navigateToItemEditBitstreams is called, and the component does not have an itemId', () => {
+    it('should redirect to the item edit page on the bitstreams tab with the itemId from the bundle links ', () => {
+      comp.itemId = undefined;
+      comp.navigateToItemEditBitstreams();
+      expect(routerStub.navigate).toHaveBeenCalledWith([getItemEditRoute('some-uuid'), 'bitstreams']);
+    });
+  });
 });
diff --git a/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.ts b/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.ts
index 3e8b686e48..ad64739dac 100644
--- a/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.ts
+++ b/src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.ts
@@ -1,7 +1,7 @@
 import { ChangeDetectionStrategy, Component, OnDestroy, OnInit } from '@angular/core';
 import { Bitstream } from '../../core/shared/bitstream.model';
 import { ActivatedRoute, Router } from '@angular/router';
-import { filter, map, switchMap } from 'rxjs/operators';
+import { map, mergeMap, switchMap} from 'rxjs/operators';
 import { combineLatest as observableCombineLatest, of as observableOf } from 'rxjs';
 import { Subscription } from 'rxjs/internal/Subscription';
 import {
@@ -19,7 +19,7 @@ import { DynamicCustomSwitchModel } from '../../shared/form/builder/ds-dynamic-f
 import { cloneDeep } from 'lodash';
 import { BitstreamDataService } from '../../core/data/bitstream-data.service';
 import {
-  getAllSucceededRemoteData, getAllSucceededRemoteDataPayload,
+  getAllSucceededRemoteDataPayload,
   getFirstSucceededRemoteDataPayload,
   getRemoteDataPayload,
   getSucceededRemoteData
@@ -35,8 +35,9 @@ import { Location } from '@angular/common';
 import { Observable } from 'rxjs/internal/Observable';
 import { RemoteData } from '../../core/data/remote-data';
 import { PaginatedList } from '../../core/data/paginated-list';
-import { followLink } from '../../shared/utils/follow-link-config.model';
 import { getItemEditRoute } from '../../+item-page/item-page-routing-paths';
+import {Bundle} from '../../core/shared/bundle.model';
+import {Item} from '../../core/shared/item.model';
 
 @Component({
   selector: 'ds-edit-bitstream-page',
@@ -299,12 +300,7 @@ export class EditBitstreamPageComponent implements OnInit, OnDestroy {
 
     const bitstream$ = this.bitstreamRD$.pipe(
       getSucceededRemoteData(),
-      getRemoteDataPayload(),
-      switchMap((bitstream: Bitstream) => this.bitstreamService.findById(bitstream.id, followLink('format')).pipe(
-        getAllSucceededRemoteData(),
-        getRemoteDataPayload(),
-        filter((bs: Bitstream) => hasValue(bs)))
-      )
+      getRemoteDataPayload()
     );
 
     const allFormats$ = this.bitstreamFormatsRD$.pipe(
@@ -501,14 +497,18 @@ export class EditBitstreamPageComponent implements OnInit, OnDestroy {
   }
 
   /**
-   * When the item ID is present, navigate back to the item's edit bitstreams page, otherwise go back to the previous
-   * page the user came from
+   * When the item ID is present, navigate back to the item's edit bitstreams page,
+   * otherwise retrieve the item ID based on the owning bundle's link
    */
   navigateToItemEditBitstreams() {
     if (hasValue(this.itemId)) {
       this.router.navigate([getItemEditRoute(this.itemId), 'bitstreams']);
     } else {
-      this.location.back();
+      this.bitstream.bundle.pipe(getFirstSucceededRemoteDataPayload(),
+          mergeMap((bundle: Bundle) => bundle.item.pipe(getFirstSucceededRemoteDataPayload(), map((item: Item) => item.uuid))))
+          .subscribe((item) => {
+            this.router.navigate(([getItemEditRoute(item), 'bitstreams']));
+          });
     }
   }
 
diff --git a/src/app/+collection-page/collection-page.component.ts b/src/app/+collection-page/collection-page.component.ts
index c7d287ed6a..a390bda4cb 100644
--- a/src/app/+collection-page/collection-page.component.ts
+++ b/src/app/+collection-page/collection-page.component.ts
@@ -17,7 +17,7 @@ import { DSpaceObjectType } from '../core/shared/dspace-object-type.model';
 import { Item } from '../core/shared/item.model';
 import {
   getSucceededRemoteData,
-  redirectToPageNotFoundOn404,
+  redirectOn404Or401,
   toDSpaceObjectListRD
 } from '../core/shared/operators';
 
@@ -63,7 +63,7 @@ export class CollectionPageComponent implements OnInit {
   ngOnInit(): void {
     this.collectionRD$ = this.route.data.pipe(
       map((data) => data.dso as RemoteData<Collection>),
-      redirectToPageNotFoundOn404(this.router),
+      redirectOn404Or401(this.router),
       take(1)
     );
     this.logoRD$ = this.collectionRD$.pipe(
diff --git a/src/app/+community-page/community-page.component.ts b/src/app/+community-page/community-page.component.ts
index 3621829927..7c93b1bf4e 100644
--- a/src/app/+community-page/community-page.component.ts
+++ b/src/app/+community-page/community-page.component.ts
@@ -13,7 +13,7 @@ import { MetadataService } from '../core/metadata/metadata.service';
 
 import { fadeInOut } from '../shared/animations/fade';
 import { hasValue } from '../shared/empty.util';
-import { redirectToPageNotFoundOn404 } from '../core/shared/operators';
+import { redirectOn404Or401 } from '../core/shared/operators';
 
 @Component({
   selector: 'ds-community-page',
@@ -47,7 +47,7 @@ export class CommunityPageComponent implements OnInit {
   ngOnInit(): void {
     this.communityRD$ = this.route.data.pipe(
       map((data) => data.dso as RemoteData<Community>),
-      redirectToPageNotFoundOn404(this.router)
+      redirectOn404Or401(this.router)
     );
     this.logoRD$ = this.communityRD$.pipe(
       map((rd: RemoteData<Community>) => rd.payload),
diff --git a/src/app/+item-page/simple/item-page.component.ts b/src/app/+item-page/simple/item-page.component.ts
index 10deef23e4..87d2294ff9 100644
--- a/src/app/+item-page/simple/item-page.component.ts
+++ b/src/app/+item-page/simple/item-page.component.ts
@@ -11,7 +11,7 @@ import { Item } from '../../core/shared/item.model';
 import { MetadataService } from '../../core/metadata/metadata.service';
 
 import { fadeInOut } from '../../shared/animations/fade';
-import { redirectToPageNotFoundOn404 } from '../../core/shared/operators';
+import { redirectOn404Or401 } from '../../core/shared/operators';
 import { ViewMode } from '../../core/shared/view-mode.model';
 
 /**
@@ -56,7 +56,7 @@ export class ItemPageComponent implements OnInit {
   ngOnInit(): void {
     this.itemRD$ = this.route.data.pipe(
       map((data) => data.item as RemoteData<Item>),
-      redirectToPageNotFoundOn404(this.router)
+      redirectOn404Or401(this.router)
     );
     this.metadataService.processRemoteData(this.itemRD$);
   }
diff --git a/src/app/app-routing-paths.ts b/src/app/app-routing-paths.ts
index 4e64a4a552..2b57a1957c 100644
--- a/src/app/app-routing-paths.ts
+++ b/src/app/app-routing-paths.ts
@@ -55,12 +55,18 @@ export function getDSORoute(dso: DSpaceObject): string {
   }
 }
 
-export const UNAUTHORIZED_PATH = 'unauthorized';
+export const UNAUTHORIZED_PATH = '401';
 
 export function getUnauthorizedRoute() {
   return `/${UNAUTHORIZED_PATH}`;
 }
 
+export const PAGE_NOT_FOUND_PATH = '404';
+
+export function getPageNotFoundRoute() {
+  return `/${PAGE_NOT_FOUND_PATH}`;
+}
+
 export const INFO_MODULE_PATH = 'info';
 export function getInfoModulePath() {
   return `/${INFO_MODULE_PATH}`;
diff --git a/src/app/core/breadcrumbs/dso-breadcrumb.resolver.ts b/src/app/core/breadcrumbs/dso-breadcrumb.resolver.ts
index 09292fec21..03d4db3f5d 100644
--- a/src/app/core/breadcrumbs/dso-breadcrumb.resolver.ts
+++ b/src/app/core/breadcrumbs/dso-breadcrumb.resolver.ts
@@ -3,12 +3,13 @@ import { Injectable } from '@angular/core';
 import { ActivatedRouteSnapshot, Resolve, RouterStateSnapshot } from '@angular/router';
 import { DSOBreadcrumbsService } from './dso-breadcrumbs.service';
 import { DataService } from '../data/data.service';
-import { getRemoteDataPayload, getSucceededRemoteData } from '../shared/operators';
-import { map } from 'rxjs/operators';
+import { getRemoteDataPayload } from '../shared/operators';
+import { filter, map, take } from 'rxjs/operators';
 import { Observable } from 'rxjs';
 import { DSpaceObject } from '../shared/dspace-object.model';
 import { ChildHALResource } from '../shared/child-hal-resource.model';
 import { FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { hasValue } from '../../shared/empty.util';
 
 /**
  * The class that resolves the BreadcrumbConfig object for a DSpaceObject
@@ -29,12 +30,17 @@ export abstract class DSOBreadcrumbResolver<T extends ChildHALResource & DSpaceO
   resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<BreadcrumbConfig<T>> {
     const uuid = route.params.id;
     return this.dataService.findById(uuid, ...this.followLinks).pipe(
-      getSucceededRemoteData(),
+      filter((rd) => hasValue(rd.error) || hasValue(rd.payload)),
+      take(1),
       getRemoteDataPayload(),
       map((object: T) => {
-        const fullPath = state.url;
-        const url = fullPath.substr(0, fullPath.indexOf(uuid)) + uuid;
-        return { provider: this.breadcrumbService, key: object, url: url };
+        if (hasValue(object)) {
+          const fullPath = state.url;
+          const url = fullPath.substr(0, fullPath.indexOf(uuid)) + uuid;
+          return {provider: this.breadcrumbService, key: object, url: url};
+        } else {
+          return undefined;
+        }
       })
     );
   }
diff --git a/src/app/core/shared/bitstream.model.ts b/src/app/core/shared/bitstream.model.ts
index ab9d1548b7..314818b482 100644
--- a/src/app/core/shared/bitstream.model.ts
+++ b/src/app/core/shared/bitstream.model.ts
@@ -8,6 +8,8 @@ import { BITSTREAM } from './bitstream.resource-type';
 import { DSpaceObject } from './dspace-object.model';
 import { HALLink } from './hal-link.model';
 import { HALResource } from './hal-resource.model';
+import {BUNDLE} from './bundle.resource-type';
+import {Bundle} from './bundle.model';
 
 @typedObject
 @inheritSerialization(DSpaceObject)
@@ -57,4 +59,10 @@ export class Bitstream extends DSpaceObject implements HALResource {
   @link(BITSTREAM_FORMAT, false, 'format')
   format?: Observable<RemoteData<BitstreamFormat>>;
 
+  /**
+   * The owning bundle for this Bitstream
+   * Will be undefined unless the bundle{@link HALLink} has been resolved.
+   */
+  @link(BUNDLE)
+  bundle?: Observable<RemoteData<Bundle>>;
 }
diff --git a/src/app/core/shared/bundle.model.ts b/src/app/core/shared/bundle.model.ts
index 1e5c14d486..c84b1f691f 100644
--- a/src/app/core/shared/bundle.model.ts
+++ b/src/app/core/shared/bundle.model.ts
@@ -10,6 +10,8 @@ import { RemoteData } from '../data/remote-data';
 import { PaginatedList } from '../data/paginated-list';
 import { BITSTREAM } from './bitstream.resource-type';
 import { Bitstream } from './bitstream.model';
+import {ITEM} from './item.resource-type';
+import {Item} from './item.model';
 
 @typedObject
 @inheritSerialization(DSpaceObject)
@@ -24,6 +26,7 @@ export class Bundle extends DSpaceObject {
     self: HALLink;
     primaryBitstream: HALLink;
     bitstreams: HALLink;
+    item: HALLink;
   };
 
   /**
@@ -39,4 +42,11 @@ export class Bundle extends DSpaceObject {
    */
   @link(BITSTREAM, true)
   bitstreams?: Observable<RemoteData<PaginatedList<Bitstream>>>;
+
+    /**
+     * The owning item for this Bundle
+     * Will be undefined unless the Item{@link HALLink} has been resolved.
+     */
+  @link(ITEM)
+  item?: Observable<RemoteData<Item>>;
 }
diff --git a/src/app/core/shared/operators.spec.ts b/src/app/core/shared/operators.spec.ts
index a19419259d..8acf5ea860 100644
--- a/src/app/core/shared/operators.spec.ts
+++ b/src/app/core/shared/operators.spec.ts
@@ -13,7 +13,8 @@ import {
   getRequestFromRequestUUID,
   getResourceLinksFromResponse,
   getResponseFromEntry,
-  getSucceededRemoteData, redirectToPageNotFoundOn404
+  getSucceededRemoteData,
+  redirectOn404Or401
 } from './operators';
 import { RemoteData } from '../data/remote-data';
 import { RemoteDataError } from '../data/remote-data-error';
@@ -199,7 +200,7 @@ describe('Core Module - RxJS Operators', () => {
     });
   });
 
-  describe('redirectToPageNotFoundOn404', () => {
+  describe('redirectOn404Or401', () => {
     let router;
     beforeEach(() => {
       router = jasmine.createSpyObj('router', ['navigateByUrl']);
@@ -208,21 +209,28 @@ describe('Core Module - RxJS Operators', () => {
     it('should call navigateByUrl to a 404 page, when the remote data contains a 404 error', () => {
       const testRD = createFailedRemoteDataObject(undefined, new RemoteDataError(404, 'Not Found', 'Object was not found'));
 
-      observableOf(testRD).pipe(redirectToPageNotFoundOn404(router)).subscribe();
+      observableOf(testRD).pipe(redirectOn404Or401(router)).subscribe();
       expect(router.navigateByUrl).toHaveBeenCalledWith('/404', { skipLocationChange: true });
     });
 
-    it('should not call navigateByUrl to a 404 page, when the remote data contains another error than a 404', () => {
+    it('should call navigateByUrl to a 401 page, when the remote data contains a 401 error', () => {
+      const testRD = createFailedRemoteDataObject(undefined, new RemoteDataError(401, 'Unauthorized', 'The current user is unauthorized'));
+
+      observableOf(testRD).pipe(redirectOn404Or401(router)).subscribe();
+      expect(router.navigateByUrl).toHaveBeenCalledWith('/401', { skipLocationChange: true });
+    });
+
+    it('should not call navigateByUrl to a 404 or 401 page, when the remote data contains another error than a 404 or 401', () => {
       const testRD = createFailedRemoteDataObject(undefined, new RemoteDataError(500, 'Server Error', 'Something went wrong'));
 
-      observableOf(testRD).pipe(redirectToPageNotFoundOn404(router)).subscribe();
+      observableOf(testRD).pipe(redirectOn404Or401(router)).subscribe();
       expect(router.navigateByUrl).not.toHaveBeenCalled();
     });
 
-    it('should not call navigateByUrl to a 404 page, when the remote data contains no error', () => {
+    it('should not call navigateByUrl to a 404 or 401 page, when the remote data contains no error', () => {
       const testRD = createSuccessfulRemoteDataObject(undefined);
 
-      observableOf(testRD).pipe(redirectToPageNotFoundOn404(router)).subscribe();
+      observableOf(testRD).pipe(redirectOn404Or401(router)).subscribe();
       expect(router.navigateByUrl).not.toHaveBeenCalled();
     });
   });
diff --git a/src/app/core/shared/operators.ts b/src/app/core/shared/operators.ts
index ad2588f2b9..29e41907e1 100644
--- a/src/app/core/shared/operators.ts
+++ b/src/app/core/shared/operators.ts
@@ -13,7 +13,7 @@ import { MetadataField } from '../metadata/metadata-field.model';
 import { MetadataSchema } from '../metadata/metadata-schema.model';
 import { BrowseDefinition } from './browse-definition.model';
 import { DSpaceObject } from './dspace-object.model';
-import { getUnauthorizedRoute } from '../../app-routing-paths';
+import { getPageNotFoundRoute, getUnauthorizedRoute } from '../../app-routing-paths';
 import { getEndUserAgreementPath } from '../../info/info-routing-paths';
 
 /**
@@ -171,16 +171,20 @@ export const getAllSucceededRemoteListPayload = () =>
     );
 
 /**
- * Operator that checks if a remote data object contains a page not found error
- * When it does contain such an error, it will redirect the user to a page not found, without altering the current URL
+ * Operator that checks if a remote data object returned a 401 or 404 error
+ * When it does contain such an error, it will redirect the user to the related error page, without altering the current URL
  * @param router The router used to navigate to a new page
  */
-export const redirectToPageNotFoundOn404 = (router: Router) =>
+export const redirectOn404Or401 = (router: Router) =>
   <T>(source: Observable<RemoteData<T>>): Observable<RemoteData<T>> =>
     source.pipe(
       tap((rd: RemoteData<T>) => {
-        if (rd.hasFailed && rd.error.statusCode === 404) {
-          router.navigateByUrl('/404', { skipLocationChange: true });
+        if (rd.hasFailed) {
+          if (rd.error.statusCode === 404) {
+            router.navigateByUrl(getPageNotFoundRoute(), {skipLocationChange: true});
+          } else if (rd.error.statusCode === 401) {
+            router.navigateByUrl(getUnauthorizedRoute(), {skipLocationChange: true});
+          }
         }
       }));
 
diff --git a/src/app/process-page/detail/process-detail.component.ts b/src/app/process-page/detail/process-detail.component.ts
index b0e2c7e378..c4610b70e9 100644
--- a/src/app/process-page/detail/process-detail.component.ts
+++ b/src/app/process-page/detail/process-detail.component.ts
@@ -4,7 +4,7 @@ import { Observable } from 'rxjs/internal/Observable';
 import { RemoteData } from '../../core/data/remote-data';
 import { Process } from '../processes/process.model';
 import { map, switchMap } from 'rxjs/operators';
-import { getFirstSucceededRemoteDataPayload, redirectToPageNotFoundOn404 } from '../../core/shared/operators';
+import { getFirstSucceededRemoteDataPayload, redirectOn404Or401 } from '../../core/shared/operators';
 import { AlertType } from '../../shared/alert/aletr-type';
 import { ProcessDataService } from '../../core/data/processes/process-data.service';
 import { PaginatedList } from '../../core/data/paginated-list';
@@ -49,7 +49,7 @@ export class ProcessDetailComponent implements OnInit {
   ngOnInit(): void {
     this.processRD$ = this.route.data.pipe(
       map((data) => data.process as RemoteData<Process>),
-      redirectToPageNotFoundOn404(this.router)
+      redirectOn404Or401(this.router)
     );
 
     this.filesRD$ = this.processRD$.pipe(
diff --git a/src/app/shared/mocks/external-source.service.mock.ts b/src/app/shared/mocks/external-source.service.mock.ts
index 85d63189e5..fd6d7cdc46 100644
--- a/src/app/shared/mocks/external-source.service.mock.ts
+++ b/src/app/shared/mocks/external-source.service.mock.ts
@@ -50,8 +50,7 @@ export const externalSourceMyStaffDb: ExternalSource = {
 /**
  * Mock for [[ExternalSourceService]]
  */
-export function getMockExternalSourceService():
-ExternalSourceService {
+export function getMockExternalSourceService(): ExternalSourceService {
   return jasmine.createSpyObj('ExternalSourceService', {
     findAll: jasmine.createSpy('findAll'),
     getExternalSourceEntries: jasmine.createSpy('getExternalSourceEntries'),
diff --git a/src/app/shared/object-grid/object-grid.component.scss b/src/app/shared/object-grid/object-grid.component.scss
index fb883a1f07..53d64bc60c 100644
--- a/src/app/shared/object-grid/object-grid.component.scss
+++ b/src/app/shared/object-grid/object-grid.component.scss
@@ -19,6 +19,7 @@ $ds-wrapper-grid-spacing: $spacer/2;
 .card-columns {
   margin-left: -$ds-wrapper-grid-spacing;
   margin-right: -$ds-wrapper-grid-spacing;
+  column-gap: 0;
 
   .card-column {
     padding-left: $ds-wrapper-grid-spacing;
diff --git a/src/app/shared/object-grid/search-result-grid-element/search-result-grid-element.component.ts b/src/app/shared/object-grid/search-result-grid-element/search-result-grid-element.component.ts
index dc05f78e40..c8c413a81b 100644
--- a/src/app/shared/object-grid/search-result-grid-element/search-result-grid-element.component.ts
+++ b/src/app/shared/object-grid/search-result-grid-element/search-result-grid-element.component.ts
@@ -32,9 +32,6 @@ export class SearchResultGridElementComponent<T extends SearchResult<K>, K exten
     protected bitstreamDataService: BitstreamDataService
   ) {
     super();
-    if (hasValue(this.object)) {
-      this.isCollapsed$ = this.isCollapsed();
-    }
   }
 
   /**
@@ -43,6 +40,7 @@ export class SearchResultGridElementComponent<T extends SearchResult<K>, K exten
   ngOnInit(): void {
     if (hasValue(this.object)) {
       this.dso = this.object.indexableObject;
+      this.isCollapsed$ = this.isCollapsed();
     }
   }
 
diff --git a/src/app/shared/object-list/search-result-list-element/item-search-result/item-types/publication/publication-search-result-list-element.component.html b/src/app/shared/object-list/search-result-list-element/item-search-result/item-types/publication/publication-search-result-list-element.component.html
index bd00e4aff1..1bc723200a 100644
--- a/src/app/shared/object-list/search-result-list-element/item-search-result/item-types/publication/publication-search-result-list-element.component.html
+++ b/src/app/shared/object-list/search-result-list-element/item-search-result/item-types/publication/publication-search-result-list-element.component.html
@@ -7,20 +7,19 @@
     <span *ngIf="linkType == linkTypes.None" class="lead"
           [innerHTML]="firstMetadataValue('dc.title')"></span>
     <span class="text-muted">
-    <ds-truncatable-part [id]="dso.id" [minLines]="1">
-            <ng-container *ngIf="dso.firstMetadataValue('dc.publisher') || dso.firstMetadataValue('dc.date.issued')">(<span class="item-list-publisher"
-                                                                                                                            [innerHTML]="firstMetadataValue('dc.publisher')">, </span><span
-                    *ngIf="dso.firstMetadataValue('dc.date.issued')" class="item-list-date"
-                    [innerHTML]="firstMetadataValue('dc.date.issued')"></span>)</ng-container>
-            <span *ngIf="dso.allMetadata(['dc.contributor.author', 'dc.creator', 'dc.contributor.*']).length > 0"
-                  class="item-list-authors">
-                    <span *ngFor="let author of allMetadataValues(['dc.contributor.author', 'dc.creator', 'dc.contributor.*']); let last=last;">
-                        <span [innerHTML]="author"><span [innerHTML]="author"></span></span>
-                        <span *ngIf="!last">; </span>
-                    </span>
-            </span>
-        </ds-truncatable-part>
-  </span>
+      <ds-truncatable-part [id]="dso.id" [minLines]="1">
+        <ng-container *ngIf="dso.firstMetadataValue('dc.publisher') || dso.firstMetadataValue('dc.date.issued')">
+          (<span *ngIf="dso.firstMetadataValue('dc.publisher')" class="item-list-publisher" [innerHTML]="firstMetadataValue('dc.publisher') + ', '"></span>
+          <span *ngIf="dso.firstMetadataValue('dc.date.issued')" class="item-list-date" [innerHTML]="firstMetadataValue('dc.date.issued')"></span>)
+        </ng-container>
+        <span *ngIf="dso.allMetadata(['dc.contributor.author', 'dc.creator', 'dc.contributor.*']).length > 0" class="item-list-authors">
+          <span *ngFor="let author of allMetadataValues(['dc.contributor.author', 'dc.creator', 'dc.contributor.*']); let last=last;">
+              <span [innerHTML]="author"><span [innerHTML]="author"></span></span>
+              <span *ngIf="!last">; </span>
+          </span>
+        </span>
+      </ds-truncatable-part>
+    </span>
     <div *ngIf="dso.firstMetadataValue('dc.description.abstract')" class="item-list-abstract">
         <ds-truncatable-part [id]="dso.id" [minLines]="3"><span
                 [innerHTML]="firstMetadataValue('dc.description.abstract')"></span>
diff --git a/src/app/statistics-page/statistics-page/statistics-page.component.ts b/src/app/statistics-page/statistics-page/statistics-page.component.ts
index e034a35dca..31cb74eb08 100644
--- a/src/app/statistics-page/statistics-page/statistics-page.component.ts
+++ b/src/app/statistics-page/statistics-page/statistics-page.component.ts
@@ -4,7 +4,7 @@ import { UsageReportService } from '../../core/statistics/usage-report-data.serv
 import { map, switchMap } from 'rxjs/operators';
 import { UsageReport } from '../../core/statistics/models/usage-report.model';
 import { RemoteData } from '../../core/data/remote-data';
-import { getRemoteDataPayload, getSucceededRemoteData, redirectToPageNotFoundOn404 } from '../../core/shared/operators';
+import { getRemoteDataPayload, getSucceededRemoteData, redirectOn404Or401 } from '../../core/shared/operators';
 import { DSpaceObject } from '../../core/shared/dspace-object.model';
 import { ActivatedRoute, Router } from '@angular/router';
 import { DSONameService } from '../../core/breadcrumbs/dso-name.service';
@@ -55,7 +55,7 @@ export abstract class StatisticsPageComponent<T extends DSpaceObject> implements
   protected getScope$(): Observable<DSpaceObject> {
     return this.route.data.pipe(
       map((data) => data.scope as RemoteData<T>),
-      redirectToPageNotFoundOn404(this.router),
+      redirectOn404Or401(this.router),
       getSucceededRemoteData(),
       getRemoteDataPayload(),
     );
diff --git a/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.scss b/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.scss
index 0d2a79b056..136bf12e0e 100644
--- a/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.scss
+++ b/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.scss
@@ -13,7 +13,7 @@
 
 .scrollable-menu {
   height: auto;
-  max-height: $dropdown-menu-max-height;
+  max-height: $dropdown-menu-max-height / 2;
   overflow-x: hidden;
 }
 
diff --git a/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.ts b/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.ts
index bb156e1878..58fadacdcc 100644
--- a/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.ts
+++ b/src/app/submission/import-external/import-external-searchbar/submission-import-external-searchbar.component.ts
@@ -1,6 +1,6 @@
-import { ChangeDetectorRef, Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
+import { ChangeDetectorRef, Component, EventEmitter, Input, OnDestroy, OnInit, Output } from '@angular/core';
 
-import { of as observableOf, Observable } from 'rxjs';
+import { Observable, of as observableOf, Subscription } from 'rxjs';
 import { catchError, tap } from 'rxjs/operators';
 
 import { ExternalSourceService } from '../../../core/data/external-source.service';
@@ -12,6 +12,7 @@ import { createSuccessfulRemoteDataObject } from '../../../shared/remote-data.ut
 import { FindListOptions } from '../../../core/data/request.models';
 import { getFirstSucceededRemoteDataPayload } from '../../../core/shared/operators';
 import { HostWindowService } from '../../../shared/host-window.service';
+import { hasValue } from '../../../shared/empty.util';
 
 /**
  * Interface for the selected external source element.
@@ -37,7 +38,7 @@ export interface ExternalSourceData {
   styleUrls: ['./submission-import-external-searchbar.component.scss'],
   templateUrl: './submission-import-external-searchbar.component.html'
 })
-export class SubmissionImportExternalSearchbarComponent implements OnInit {
+export class SubmissionImportExternalSearchbarComponent implements OnInit, OnDestroy {
   /**
    * The init external source value.
    */
@@ -76,6 +77,11 @@ export class SubmissionImportExternalSearchbarComponent implements OnInit {
    */
   protected findListOptions: FindListOptions;
 
+  /**
+   * The subscription to unsubscribe
+   */
+  protected sub: Subscription;
+
   /**
    * Initialize the component variables.
    * @param {ExternalSourceService} externalService
@@ -101,7 +107,7 @@ export class SubmissionImportExternalSearchbarComponent implements OnInit {
     this.sourceList = [];
     this.findListOptions = Object.assign({}, new FindListOptions(), {
       elementsPerPage: 5,
-      currentPage: 0,
+      currentPage: 1,
     });
     this.externalService.findAll(this.findListOptions).pipe(
       catchError(() => {
@@ -139,13 +145,13 @@ export class SubmissionImportExternalSearchbarComponent implements OnInit {
    * Load the next pages of external sources.
    */
   public onScroll(): void {
-    if (!this.sourceListLoading && this.pageInfo.currentPage <= this.pageInfo.totalPages) {
+    if (!this.sourceListLoading && ((this.pageInfo.currentPage + 1) <= this.pageInfo.totalPages)) {
       this.sourceListLoading = true;
       this.findListOptions = Object.assign({}, new FindListOptions(), {
         elementsPerPage: 5,
         currentPage: this.findListOptions.currentPage + 1,
       });
-      this.externalService.findAll(this.findListOptions).pipe(
+      this.sub = this.externalService.findAll(this.findListOptions).pipe(
         catchError(() => {
           const pageInfo = new PageInfo();
           const paginatedList = new PaginatedList(pageInfo, []);
@@ -159,7 +165,7 @@ export class SubmissionImportExternalSearchbarComponent implements OnInit {
         })
         this.pageInfo = externalSource.payload.pageInfo;
         this.cdr.detectChanges();
-      })
+      });
     }
   }
 
@@ -169,4 +175,13 @@ export class SubmissionImportExternalSearchbarComponent implements OnInit {
   public search(): void {
     this.externalSourceData.emit({ sourceId: this.selectedElement.id, query: this.searchString });
   }
+
+  /**
+   * Unsubscribe from all subscriptions
+   */
+  ngOnDestroy(): void {
+    if (hasValue(this.sub)) {
+      this.sub.unsubscribe();
+    }
+  }
 }
diff --git a/src/app/submission/import-external/submission-import-external.component.html b/src/app/submission/import-external/submission-import-external.component.html
index c4de97b934..bee5f5d872 100644
--- a/src/app/submission/import-external/submission-import-external.component.html
+++ b/src/app/submission/import-external/submission-import-external.component.html
@@ -4,14 +4,14 @@
       <h2 id="header" class="pb-2">{{'submission.import-external.title' | translate}}</h2>
       <ds-submission-import-external-searchbar
         [initExternalSourceData]="routeData"
-        (externalSourceData) = "getExternalsourceData($event)">
+        (externalSourceData) = "getExternalSourceData($event)">
       </ds-submission-import-external-searchbar>
     </div>
   </div>
   <div class="row">
     <div *ngIf="routeData.sourceId !== ''" class="col-md-12">
       <ng-container *ngVar="(entriesRD$ | async) as entriesRD">
-        <h3 *ngIf="entriesRD?.payload?.page?.length !== 0">{{ 'submission.sections.describe.relationship-lookup.selection-tab.title.' + routeData.sourceId | translate}}</h3>
+        <h3 *ngIf="entriesRD && entriesRD?.payload?.page?.length !== 0">{{ 'submission.sections.describe.relationship-lookup.selection-tab.title.' + routeData.sourceId | translate}}</h3>
         <ds-viewable-collection *ngIf="entriesRD?.hasSucceeded && !(isLoading$ | async) && entriesRD?.payload?.page?.length > 0" @fadeIn
                                 [objects]="entriesRD"
                                 [selectionConfig]="{ repeatable: repeatable, listId: listId }"
@@ -20,7 +20,8 @@
                                 [context]="context"
                                 [importable]="true"
                                 [importConfig]="importConfig"
-                                (importObject)="import($event)">
+                                (importObject)="import($event)"
+                                (pageChange)="paginationChange();">
         </ds-viewable-collection>
         <ds-loading *ngIf="(isLoading$ | async)"
                     message="{{'loading.search-results' | translate}}"></ds-loading>
diff --git a/src/app/submission/import-external/submission-import-external.component.spec.ts b/src/app/submission/import-external/submission-import-external.component.spec.ts
index 4cbe204a91..10370d5e77 100644
--- a/src/app/submission/import-external/submission-import-external.component.spec.ts
+++ b/src/app/submission/import-external/submission-import-external.component.spec.ts
@@ -1,21 +1,25 @@
 import { Component, NO_ERRORS_SCHEMA } from '@angular/core';
-import { async, TestBed, ComponentFixture, inject } from '@angular/core/testing';
+import { async, ComponentFixture, inject, TestBed } from '@angular/core/testing';
+
+import { getTestScheduler } from 'jasmine-marbles';
 import { TranslateModule } from '@ngx-translate/core';
 import { Router } from '@angular/router';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
-import { of as observableOf, of } from 'rxjs/internal/observable/of';
+import { of as observableOf } from 'rxjs';
+import { TestScheduler } from 'rxjs/testing';
+
 import { SubmissionImportExternalComponent } from './submission-import-external.component';
 import { ExternalSourceService } from '../../core/data/external-source.service';
 import { getMockExternalSourceService } from '../../shared/mocks/external-source.service.mock';
 import { SearchConfigurationService } from '../../core/shared/search/search-configuration.service';
 import { RouteService } from '../../core/services/route.service';
-import { createTestComponent, createPaginatedList } from '../../shared/testing/utils.test';
+import { createPaginatedList, createTestComponent } from '../../shared/testing/utils.test';
 import { RouterStub } from '../../shared/testing/router.stub';
 import { VarDirective } from '../../shared/utils/var.directive';
 import { routeServiceStub } from '../../shared/testing/route-service.stub';
 import { PaginatedSearchOptions } from '../../shared/search/paginated-search-options.model';
 import { PaginationComponentOptions } from '../../shared/pagination/pagination-component-options.model';
-import { createSuccessfulRemoteDataObject } from '../../shared/remote-data.utils';
+import { createSuccessfulRemoteDataObject, createSuccessfulRemoteDataObject$ } from '../../shared/remote-data.utils';
 import { ExternalSourceEntry } from '../../core/shared/external-source-entry.model';
 import { SubmissionImportExternalPreviewComponent } from './import-external-preview/submission-import-external-preview.component';
 
@@ -23,16 +27,19 @@ describe('SubmissionImportExternalComponent test suite', () => {
   let comp: SubmissionImportExternalComponent;
   let compAsAny: any;
   let fixture: ComponentFixture<SubmissionImportExternalComponent>;
+  let scheduler: TestScheduler;
   const ngbModal = jasmine.createSpyObj('modal', ['open']);
-  const mockSearchOptions = of(new PaginatedSearchOptions({
+  const mockSearchOptions = observableOf(new PaginatedSearchOptions({
     pagination: Object.assign(new PaginationComponentOptions(), {
       pageSize: 10,
       currentPage: 0
-    })
+    }),
+    query: 'test'
   }));
   const searchConfigServiceStub = {
     paginatedSearchOptions: mockSearchOptions
   };
+  const mockExternalSourceService: any = getMockExternalSourceService();
 
   beforeEach(async (() => {
     TestBed.configureTestingModule({
@@ -45,7 +52,7 @@ describe('SubmissionImportExternalComponent test suite', () => {
         VarDirective
       ],
       providers: [
-        { provide: ExternalSourceService, useClass: getMockExternalSourceService },
+        { provide: ExternalSourceService, useValue: mockExternalSourceService },
         { provide: SearchConfigurationService, useValue: searchConfigServiceStub },
         { provide: RouteService, useValue: routeServiceStub },
         { provide: Router, useValue: new RouterStub() },
@@ -83,6 +90,8 @@ describe('SubmissionImportExternalComponent test suite', () => {
       fixture = TestBed.createComponent(SubmissionImportExternalComponent);
       comp = fixture.componentInstance;
       compAsAny = comp;
+      scheduler = getTestScheduler();
+      mockExternalSourceService.getExternalSourceEntries.and.returnValue(createSuccessfulRemoteDataObject$(createPaginatedList([])))
     });
 
     afterEach(() => {
@@ -102,25 +111,31 @@ describe('SubmissionImportExternalComponent test suite', () => {
     });
 
     it('Should init component properly (with route data)', () => {
-      const expectedEntries = createSuccessfulRemoteDataObject(createPaginatedList([]));
-      const searchOptions = new PaginatedSearchOptions({
-        pagination: Object.assign(new PaginationComponentOptions(), {
-          pageSize: 10,
-          currentPage: 0
-        })
-      });
-      spyOn(compAsAny.routeService, 'getQueryParameterValue').and.returnValue(observableOf('dummy'));
+      spyOn(compAsAny, 'retrieveExternalSources');
+      spyOn(compAsAny.routeService, 'getQueryParameterValue').and.returnValues(observableOf('source'), observableOf('dummy'));
       fixture.detectChanges();
 
-      expect(comp.routeData).toEqual({ sourceId: 'dummy', query: 'dummy' });
-      expect(comp.isLoading$.value).toBe(true);
-      expect(comp.entriesRD$.value).toEqual(expectedEntries);
-      expect(compAsAny.externalService.getExternalSourceEntries).toHaveBeenCalledWith('dummy', searchOptions);
+      expect(compAsAny.retrieveExternalSources).toHaveBeenCalledWith('source', 'dummy');
+    });
+
+    it('Should call \'getExternalSourceEntries\' properly', () => {
+      comp.routeData = { sourceId: '', query: '' };
+      scheduler.schedule(() => compAsAny.retrieveExternalSources('orcidV2', 'test'));
+      scheduler.flush();
+
+      expect(comp.routeData).toEqual({ sourceId: 'orcidV2', query: 'test' });
+      expect(comp.isLoading$.value).toBe(false);
+      expect(compAsAny.externalService.getExternalSourceEntries).toHaveBeenCalled();
     });
 
     it('Should call \'router.navigate\'', () => {
+      comp.routeData = { sourceId: '', query: '' };
+      spyOn(compAsAny, 'retrieveExternalSources').and.callFake(() => null);
+      compAsAny.router.navigate.and.returnValue( new Promise(() => {return;}))
       const event = { sourceId: 'orcidV2', query: 'dummy' };
-      comp.getExternalsourceData(event);
+
+      scheduler.schedule(() => comp.getExternalSourceData(event));
+      scheduler.flush();
 
       expect(compAsAny.router.navigate).toHaveBeenCalledWith([], { queryParams: { source: event.sourceId, query: event.query }, replaceUrl: true });
     });
diff --git a/src/app/submission/import-external/submission-import-external.component.ts b/src/app/submission/import-external/submission-import-external.component.ts
index a369863a74..d28186a703 100644
--- a/src/app/submission/import-external/submission-import-external.component.ts
+++ b/src/app/submission/import-external/submission-import-external.component.ts
@@ -1,22 +1,25 @@
-import { Component, OnInit } from '@angular/core';
+import { Component, OnDestroy, OnInit } from '@angular/core';
 import { Router } from '@angular/router';
-import { combineLatest, BehaviorSubject } from 'rxjs';
+
+import { BehaviorSubject, combineLatest, Subscription } from 'rxjs';
+import { filter, flatMap, take } from 'rxjs/operators';
+import { NgbModal, NgbModalRef } from '@ng-bootstrap/ng-bootstrap';
+
 import { ExternalSourceService } from '../../core/data/external-source.service';
 import { ExternalSourceData } from './import-external-searchbar/submission-import-external-searchbar.component';
 import { RemoteData } from '../../core/data/remote-data';
 import { PaginatedList } from '../../core/data/paginated-list';
 import { ExternalSourceEntry } from '../../core/shared/external-source-entry.model';
 import { SearchConfigurationService } from '../../core/shared/search/search-configuration.service';
-import { switchMap, filter, take } from 'rxjs/operators';
-import { PaginatedSearchOptions } from '../../shared/search/paginated-search-options.model';
 import { Context } from '../../core/shared/context.model';
 import { PaginationComponentOptions } from '../../shared/pagination/pagination-component-options.model';
 import { RouteService } from '../../core/services/route.service';
 import { createSuccessfulRemoteDataObject } from '../../shared/remote-data.utils';
-import { NgbModal, NgbModalRef } from '@ng-bootstrap/ng-bootstrap';
 import { SubmissionImportExternalPreviewComponent } from './import-external-preview/submission-import-external-preview.component';
 import { fadeIn } from '../../shared/animations/fade';
 import { PageInfo } from '../../core/shared/page-info.model';
+import { hasValue, isNotEmpty } from '../../shared/empty.util';
+import { getFinishedRemoteData } from '../../core/shared/operators';
 
 /**
  * This component allows to submit a new workspaceitem importing the data from an external source.
@@ -25,9 +28,10 @@ import { PageInfo } from '../../core/shared/page-info.model';
   selector: 'ds-submission-import-external',
   styleUrls: ['./submission-import-external.component.scss'],
   templateUrl: './submission-import-external.component.html',
-  animations: [ fadeIn ]
+  animations: [fadeIn]
 })
-export class SubmissionImportExternalComponent implements OnInit {
+export class SubmissionImportExternalComponent implements OnInit, OnDestroy {
+
   /**
    * The external source search data from the routing service.
    */
@@ -35,11 +39,11 @@ export class SubmissionImportExternalComponent implements OnInit {
   /**
    * The displayed list of entries
    */
-  public entriesRD$: BehaviorSubject<RemoteData<PaginatedList<ExternalSourceEntry>>>;
+  public entriesRD$: BehaviorSubject<RemoteData<PaginatedList<ExternalSourceEntry>>> = new BehaviorSubject<RemoteData<PaginatedList<ExternalSourceEntry>>>(null);
   /**
    * TRUE if the REST service is called to retrieve the external source items
    */
-  public isLoading$: BehaviorSubject<boolean>;
+  public isLoading$: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);
   /**
    * Configuration to use for the import buttons
    */
@@ -61,7 +65,7 @@ export class SubmissionImportExternalComponent implements OnInit {
    */
   public initialPagination = Object.assign(new PaginationComponentOptions(), {
     id: 'submission-external-source-relation-list',
-    pageSize: 5
+    pageSize: 10
   });
   /**
    * The context to displaying lists for
@@ -72,6 +76,11 @@ export class SubmissionImportExternalComponent implements OnInit {
    */
   public modalRef: NgbModalRef;
 
+  /**
+   * The subscription to unsubscribe
+   */
+  protected subs: Subscription[] = [];
+
   /**
    * Initialize the component variables.
    * @param {SearchConfigurationService} searchConfigService
@@ -86,57 +95,45 @@ export class SubmissionImportExternalComponent implements OnInit {
     private routeService: RouteService,
     private router: Router,
     private modalService: NgbModal,
-  ) { }
+  ) {
+  }
 
   /**
    * Get the entries for the selected external source and set initial configuration.
    */
   ngOnInit(): void {
-    this.label      = 'Journal';
-    this.listId     = 'list-submission-external-sources';
-    this.context    = Context.EntitySearchModalWithNameVariants;
+    this.label = 'Journal';
+    this.listId = 'list-submission-external-sources';
+    this.context = Context.EntitySearchModalWithNameVariants;
     this.repeatable = false;
-    this.routeData  = { sourceId: '', query: '' };
+    this.routeData = { sourceId: '', query: '' };
     this.importConfig = {
       buttonLabel: 'submission.sections.describe.relationship-lookup.external-source.import-button-title.' + this.label
     };
     this.entriesRD$ = new BehaviorSubject(createSuccessfulRemoteDataObject(new PaginatedList(new PageInfo(), [])));
     this.isLoading$ = new BehaviorSubject(false);
-    combineLatest(
+    this.subs.push(combineLatest(
       [
         this.routeService.getQueryParameterValue('source'),
         this.routeService.getQueryParameterValue('query')
       ]).pipe(
-        filter(([source, query]) => source && query && source !== '' && query !== ''),
-        filter(([source, query]) => source !== this.routeData.sourceId || query !== this.routeData.query),
-        switchMap(([source, query]) => {
-          this.routeData.sourceId = source;
-          this.routeData.query = query;
-          this.isLoading$.next(true);
-          return this.searchConfigService.paginatedSearchOptions.pipe(
-            switchMap((searchOptions: PaginatedSearchOptions) => {
-              return this.externalService.getExternalSourceEntries(this.routeData.sourceId, searchOptions);
-            }),
-            take(1)
-          )
-        }),
-    ).subscribe((rdData) => {
-      this.entriesRD$.next(rdData);
-      this.isLoading$.next(false);
-    });
+      take(1)
+    ).subscribe(([source, query]: [string, string]) => {
+      this.retrieveExternalSources(source, query);
+    }));
   }
 
   /**
    * Get the data from the searchbar and changes the router data.
    */
-  public getExternalsourceData(event: ExternalSourceData): void {
+  public getExternalSourceData(event: ExternalSourceData): void {
     this.router.navigate(
       [],
       {
         queryParams: { source: event.sourceId, query: event.query },
         replaceUrl: true
       }
-    );
+    ).then(() => this.retrieveExternalSources(event.sourceId, event.query));
   }
 
   /**
@@ -150,4 +147,49 @@ export class SubmissionImportExternalComponent implements OnInit {
     const modalComp = this.modalRef.componentInstance;
     modalComp.externalSourceEntry = entry;
   }
+
+  /**
+   * Retrieve external sources on pagination change
+   */
+  paginationChange() {
+    this.retrieveExternalSources(this.routeData.sourceId, this.routeData.query);
+  }
+
+  /**
+   * Unsubscribe from all subscriptions
+   */
+  ngOnDestroy(): void {
+    this.subs
+      .filter((sub) => hasValue(sub))
+      .forEach((sub) => sub.unsubscribe());
+  }
+
+  /**
+   * Retrieve external source entries
+   *
+   * @param source The source tupe
+   * @param query The query string to search
+   */
+  private retrieveExternalSources(source: string, query: string): void {
+    if (isNotEmpty(source) && isNotEmpty(query)) {
+      this.routeData.sourceId = source;
+      this.routeData.query = query;
+      this.isLoading$.next(true);
+      this.subs.push(
+        this.searchConfigService.paginatedSearchOptions.pipe(
+          filter((searchOptions) => searchOptions.query === query),
+          take(1),
+          flatMap((searchOptions) => this.externalService.getExternalSourceEntries(this.routeData.sourceId, searchOptions).pipe(
+            getFinishedRemoteData(),
+            take(1)
+          )),
+          take(1)
+        ).subscribe((rdData) => {
+          this.entriesRD$.next(rdData);
+          this.isLoading$.next(false);
+        })
+      );
+    }
+  }
+
 }
diff --git a/src/assets/i18n/en.json5 b/src/assets/i18n/en.json5
index c93944f929..0ab4e29b69 100644
--- a/src/assets/i18n/en.json5
+++ b/src/assets/i18n/en.json5
@@ -2931,6 +2931,8 @@
 
   "submission.import-external.search.source.hint": "Pick an external source",
 
+  "submission.import-external.source.arxiv": "arXiv",
+
   "submission.import-external.source.loading": "Loading ...",
 
   "submission.import-external.source.sherpaJournal": "SHERPA Journals",