[CST-3782] lookup click doesn't clear the plain value

src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-form-control-container.component.ts

@@ -37,6 +37,7 @@ import {
   DynamicFormControl,
   DynamicFormControlContainerComponent,
   DynamicFormControlEvent,
+  DynamicFormControlEventType,
   DynamicFormControlModel,
   DynamicFormLayout,
   DynamicFormLayoutService,
@@ -394,6 +395,24 @@ export class DsDynamicFormControlContainerComponent extends DynamicFormControlCo
       size: 'lg'
     });
 
+    if (hasValue(this.model.value)) {
+      this.focus.emit({
+        $event: new Event('focus'),
+        context: this.context,
+        control: this.control,
+        model: this.model,
+        type: DynamicFormControlEventType.Focus
+      } as DynamicFormControlEvent);
+
+      this.change.emit({
+        $event: new Event('change'),
+        context: this.context,
+        control: this.control,
+        model: this.model,
+        type: DynamicFormControlEventType.Change
+      } as DynamicFormControlEvent);
+    }
+
     this.submissionService.dispatchSave(this.model.submissionId);
 
     const modalComp = this.modalRef.componentInstance;

src/app/shared/form/builder/ds-dynamic-form-ui/existing-metadata-list-element/existing-metadata-list-element.component.spec.ts

@@ -38,6 +38,7 @@ describe('ExistingMetadataListElementComponent', () => {
   let relatedSearchResult;
   let submissionId;
   let relationshipService;
+  let submissionServiceStub;
 
   function init() {
     uuid1 = '91ce578d-2e63-4093-8c73-3faafd716000';
@@ -64,6 +65,8 @@ describe('ExistingMetadataListElementComponent', () => {
     relationship = Object.assign(new Relationship(), { leftItem: leftItemRD$, rightItem: rightItemRD$ });
     submissionId = '1234';
     reoRel = new ReorderableRelationship(relationship, true, {} as any, {} as any, submissionId);
+    submissionServiceStub = new SubmissionServiceStub();
+    submissionServiceStub.getSubmissionObject.and.returnValue(observableOf({}));
   }
 
   beforeEach(waitForAsync(() => {
@@ -81,7 +84,7 @@ describe('ExistingMetadataListElementComponent', () => {
       providers: [
         { provide: SelectableListService, useValue: selectionService },
         { provide: Store, useValue: store },
-        { provide: SubmissionService, useClass: SubmissionServiceStub },
+        { provide: SubmissionService, useValue: submissionServiceStub },
       ],
       schemas: [NO_ERRORS_SCHEMA]
     })

src/app/shared/form/builder/ds-dynamic-form-ui/existing-metadata-list-element/existing-metadata-list-element.component.ts

@@ -3,7 +3,7 @@ import { FormControl } from '@angular/forms';
 import { DynamicFormArrayGroupModel } from '@ng-dynamic-forms/core';
 import { Store } from '@ngrx/store';
 import { BehaviorSubject, Subscription } from 'rxjs';
-import { filter } from 'rxjs/operators';
+import { filter, take } from 'rxjs/operators';
 import { AppState } from '../../../../../app.reducer';
 import { RelationshipService } from '../../../../../core/data/relationship.service';
 import { Relationship } from '../../../../../core/shared/item-relationships/relationship.model';
@@ -20,6 +20,7 @@ import { RelationshipOptions } from '../../models/relationship-options.model';
 import { DynamicConcatModel } from '../models/ds-dynamic-concat.model';
 import { RemoveRelationshipAction } from '../relation-lookup-modal/relationship.actions';
 import { SubmissionService } from '../../../../../submission/submission.service';
+import { SubmissionObjectEntry } from '../../../../../submission/objects/submission-objects.reducer';
 
 // tslint:disable:max-classes-per-file
 /**
@@ -197,9 +198,13 @@ export class ExistingMetadataListElementComponent implements OnInit, OnChanges,
    */
   removeSelection() {
     this.submissionService.dispatchSave(this.submissionId);
+    this.submissionService.getSubmissionObject(this.submissionId).pipe(
+      filter((state: SubmissionObjectEntry) => !state.savePending && !state.isLoading),
+      take(1)).subscribe(() => {
       this.selectableListService.deselectSingle(this.listId, Object.assign(new ItemSearchResult(), { indexableObject: this.relatedItem }));
       this.store.dispatch(new RemoveRelationshipAction(this.submissionItem, this.relatedItem, this.relationshipOptions.relationshipType, this.submissionId));
       this.remove.emit();
+    });
   }
 
   /**