diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-form-control-container.component.ts b/src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-form-control-container.component.ts
index 253c597f7b..796c2b02a0 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-form-control-container.component.ts
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-form-control-container.component.ts
@@ -317,10 +317,12 @@ export class DsDynamicFormControlContainerComponent extends DynamicFormControlCo
    * Open a modal where the user can select relationships to be added to item being submitted
    */
   openLookup() {
+    console.log(this.model);
     this.modalRef = this.modalService.open(DsDynamicLookupRelationModalComponent, {
       size: 'lg'
     });
     const modalComp = this.modalRef.componentInstance;
+    modalComp.query = this.model.value.value;
     modalComp.repeatable = this.model.repeatable;
     modalComp.listId = this.listId;
     modalComp.relationshipOptions = this.model.relationship;
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/models/ds-dynamic-concat.model.ts b/src/app/shared/form/builder/ds-dynamic-form-ui/models/ds-dynamic-concat.model.ts
index 37a89c9ecb..fa6ad2efef 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/models/ds-dynamic-concat.model.ts
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/models/ds-dynamic-concat.model.ts
@@ -37,7 +37,7 @@ export class DynamicConcatModel extends DynamicFormGroupModel {
   constructor(config: DynamicConcatModelConfig, layout?: DynamicFormControlLayout) {
 
     super(config, layout);
-
+    console.log(config);
     this.separator = config.separator + ' ';
     this.relationship = config.relationship;
     this.repeatable = config.repeatable;
@@ -57,8 +57,10 @@ export class DynamicConcatModel extends DynamicFormGroupModel {
       return Object.assign(new FormFieldMetadataValueObject(), firstValue, { value: firstValue.value + this.separator + secondValue.value });
     } else if (isNotEmpty(firstValue) && isNotEmpty(firstValue.value)) {
       return Object.assign(new FormFieldMetadataValueObject(), firstValue);
+    } else if (isNotEmpty(secondValue) && isNotEmpty(secondValue.value)) {
+      return Object.assign(new FormFieldMetadataValueObject(), secondValue);
     } else {
-      return null;
+      return new FormFieldMetadataValueObject();
     }
   }
 
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.html b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.html
index 52f983e723..67ddcd3db8 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.html
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.html
@@ -15,6 +15,7 @@
                         [relationship]="relationshipOptions"
                         [repeatable]="repeatable"
                         [context]="context"
+                        [query]="query"
                         (selectObject)="select($event)"
                         (deselectObject)="deselect($event)"
                         class="d-block pt-3">
@@ -42,4 +43,4 @@
     <div>
         <button type="button" class="btn btn-danger" (click)="close()">{{ ('submission.sections.describe.relationship-lookup.close' | translate) }}</button>
     </div>
-</div>
\ No newline at end of file
+</div>
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.ts b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.ts
index 4aab8ff325..eab9102c7f 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.ts
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/dynamic-lookup-relation-modal.component.ts
@@ -42,6 +42,7 @@ export class DsDynamicLookupRelationModalComponent implements OnInit, OnDestroy
   selection$: Observable<ListableObject[]>;
   context: Context;
   metadataFields: string;
+  query: string;
   subMap: {
     [uuid: string]: Subscription
   } = {};
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.html b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.html
index 4e2da1f12b..cf79f37a44 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.html
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.html
@@ -3,7 +3,7 @@
                        [resultCount]="(resultsRD$ | async)?.payload?.totalElements"
                        [inPlaceSearch]="true" [showViewModes]="false"></ds-search-sidebar>
     <div class="col-8">
-        <ds-search-form [inPlaceSearch]="true"></ds-search-form>
+        <ds-search-form [inPlaceSearch]="true" [query]="query"></ds-search-form>
 
         <ds-search-labels [inPlaceSearch]="true"></ds-search-labels>
 
@@ -66,4 +66,4 @@
                            (selectObject)="selectObject.emit($event)">
         </ds-search-results>
     </div>
-</div>
\ No newline at end of file
+</div>
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts
index 9c00d64953..c2ba77eacf 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts
@@ -39,6 +39,7 @@ import { Context } from '../../../../../../core/shared/context.model';
 export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDestroy {
   @Input() relationship: RelationshipOptions;
   @Input() listId: string;
+  @Input() query: string;
   @Input() repeatable: boolean;
   @Input() selection$: Observable<ListableObject[]>;
   @Input() context: Context;
@@ -73,8 +74,6 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
     this.resetRoute();
     this.routeService.setParameter('fixedFilterQuery', this.relationship.filter);
     this.routeService.setParameter('configuration', this.relationship.searchConfiguration);
-
-    this.someSelected$ = this.selection$.pipe(map((selection) => isNotEmpty(selection)));
     this.resultsRD$ = this.searchConfigService.paginatedSearchOptions.pipe(
       map((options) => {
         return Object.assign(new PaginatedSearchOptions({}), options, { fixedFilter: this.relationship.filter, configuration: this.relationship.searchConfiguration })
@@ -101,7 +100,7 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
    */
   resetRoute() {
     this.router.navigate([], {
-      queryParams: Object.assign({}, { page: 1, pageSize: this.initialPagination.pageSize }),
+      queryParams: Object.assign({}, { page: 1, pageSize: this.initialPagination.pageSize, query: this.query }),
     });
   }
 
diff --git a/src/app/shared/form/builder/parsers/field-parser.ts b/src/app/shared/form/builder/parsers/field-parser.ts
index f3f82b3b0f..539e8e202d 100644
--- a/src/app/shared/form/builder/parsers/field-parser.ts
+++ b/src/app/shared/form/builder/parsers/field-parser.ts
@@ -32,6 +32,8 @@ export abstract class FieldParser {
   public abstract modelFactory(fieldValue?: FormFieldMetadataValueObject, label?: boolean): any;
 
   public parse() {
+    console.log(this.configData);
+
     if (((this.getInitValueCount() > 1 && !this.configData.repeatable) || (this.configData.repeatable))
       && (this.configData.input.type !== 'list')
       && (this.configData.input.type !== 'tag')
@@ -44,9 +46,8 @@ export abstract class FieldParser {
 
       if (Array.isArray(this.configData.selectableMetadata) && this.configData.selectableMetadata.length === 1) {
         metadataKey = this.configData.selectableMetadata[0].metadata;
-      };
+      }
 
-      console.log(this.getInitArrayIndex());
       const config = {
         id: uniqueId() + '_array',
         label: this.configData.label,