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 81f570b14c..fc618023f9 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
@@ -1,7 +1,6 @@
 import { DynamicFormControlLayout, DynamicFormGroupModel, DynamicFormGroupModelConfig, serializable } from '@ng-dynamic-forms/core';
 import { isNotEmpty } from '../../../../empty.util';
 import { DsDynamicInputModel } from './ds-dynamic-input.model';
-import { AuthorityValueModel } from '../../../../../core/integration/models/authority-value.model';
 import { FormFieldMetadataValueObject } from '../../models/form-field-metadata-value.model';
 
 export const CONCAT_GROUP_SUFFIX = '_CONCAT_GROUP';
@@ -28,8 +27,11 @@ export class DynamicConcatModel extends DynamicFormGroupModel {
   get value() {
     const firstValue = (this.get(0) as DsDynamicInputModel).value;
     const secondValue = (this.get(1) as DsDynamicInputModel).value;
+
     if (isNotEmpty(firstValue) && isNotEmpty(secondValue)) {
       return new FormFieldMetadataValueObject(firstValue + this.separator + secondValue);
+    } else if (isNotEmpty(firstValue)) {
+      return new FormFieldMetadataValueObject(firstValue);
     } else {
       return null;
     }
@@ -37,14 +39,24 @@ export class DynamicConcatModel extends DynamicFormGroupModel {
 
   set value(value: string | FormFieldMetadataValueObject) {
     let values;
+    let tempValue: string;
+
     if (typeof value === 'string') {
-      values =  value ? value.split(this.separator) : [null, null];
+      tempValue =  value;
     } else {
-      values =  value ? value.value.split(this.separator) : [null, null];
+      tempValue = value.value;
     }
 
-    if (values.length > 1) {
+    if (tempValue.includes(this.separator)) {
+      values = tempValue.split(this.separator);
+    } else {
+      values = [tempValue, null];
+    }
+
+    if (values[0]) {
       (this.get(0) as DsDynamicInputModel).valueUpdates.next(values[0]);
+    }
+    if (values[1]) {
       (this.get(1) as DsDynamicInputModel).valueUpdates.next(values[1]);
     }
   }
diff --git a/src/app/shared/form/builder/form-builder.service.ts b/src/app/shared/form/builder/form-builder.service.ts
index fab5db6151..265f7fb726 100644
--- a/src/app/shared/form/builder/form-builder.service.ts
+++ b/src/app/shared/form/builder/form-builder.service.ts
@@ -277,13 +277,17 @@ export class FormBuilderService extends DynamicFormService {
   }
 
   getId(model: DynamicPathable): string {
+    let tempModel: DynamicFormControlModel;
+
     if (this.isArrayGroup(model as DynamicFormControlModel)) {
       return model.index.toString();
+    } else if (this.isModelInCustomGroup(model as DynamicFormControlModel)) {
+      tempModel = (model as any).parent;
     } else {
-      return ((model as DynamicFormControlModel).id !== (model as DynamicFormControlModel).name) ?
-        (model as DynamicFormControlModel).name :
-        (model as DynamicFormControlModel).id;
+      tempModel = (model as any);
     }
+
+    return (tempModel.id !== tempModel.name) ? tempModel.name : tempModel.id;
   }
 
 }
diff --git a/src/app/shared/form/builder/parsers/concat-field-parser.ts b/src/app/shared/form/builder/parsers/concat-field-parser.ts
index 802d866ad7..135dda5de3 100644
--- a/src/app/shared/form/builder/parsers/concat-field-parser.ts
+++ b/src/app/shared/form/builder/parsers/concat-field-parser.ts
@@ -31,16 +31,7 @@ export class ConcatFieldParser extends FieldParser {
 
     let clsGroup: DynamicFormControlLayout;
     let clsInput: DynamicFormControlLayout;
-    let newId: string;
-
-    if (this.configData.selectableMetadata[0].metadata.includes('.')) {
-      newId = this.configData.selectableMetadata[0].metadata
-        .split('.')
-        .slice(0, this.configData.selectableMetadata[0].metadata.split('.').length - 1)
-        .join('.');
-    } else {
-      newId = this.configData.selectableMetadata[0].metadata
-    }
+    const id: string = this.configData.selectableMetadata[0].metadata;
 
     clsInput = {
       grid: {
@@ -48,14 +39,14 @@ export class ConcatFieldParser extends FieldParser {
       }
     };
 
-    const groupId = newId.replace(/\./g, '_') + CONCAT_GROUP_SUFFIX;
+    const groupId = id.replace(/\./g, '_') + CONCAT_GROUP_SUFFIX;
     const concatGroup: DynamicConcatModelConfig = this.initModel(groupId, false, false);
 
     concatGroup.group = [];
     concatGroup.separator = this.separator;
 
-    const input1ModelConfig: DynamicInputModelConfig = this.initModel(newId + CONCAT_FIRST_INPUT_SUFFIX, label, false, false);
-    const input2ModelConfig: DynamicInputModelConfig = this.initModel(newId + CONCAT_SECOND_INPUT_SUFFIX, label, true, false);
+    const input1ModelConfig: DynamicInputModelConfig = this.initModel(id + CONCAT_FIRST_INPUT_SUFFIX, label, false, false);
+    const input2ModelConfig: DynamicInputModelConfig = this.initModel(id + CONCAT_SECOND_INPUT_SUFFIX, label, true, false);
 
     if (this.configData.mandatory) {
       input1ModelConfig.required = true;
@@ -69,16 +60,6 @@ export class ConcatFieldParser extends FieldParser {
       input2ModelConfig.placeholder = this.secondPlaceholder;
     }
 
-    // Init values
-    if (isNotEmpty(fieldValue)) {
-      const values = fieldValue.value.split(this.separator);
-
-      if (values.length > 1) {
-        input1ModelConfig.value = values[0].trim();
-        input2ModelConfig.value = values[1].trim();
-      }
-    }
-
     // Split placeholder if is like 'placeholder1/placeholder2'
     const placeholder = this.configData.label.split('/');
     if (placeholder.length === 2) {
@@ -99,6 +80,11 @@ export class ConcatFieldParser extends FieldParser {
     const concatModel = new DynamicConcatModel(concatGroup, clsGroup);
     concatModel.name = this.getFieldId();
 
+    // Init values
+    if (isNotEmpty(fieldValue)) {
+      concatModel.value = fieldValue;
+    }
+
     return concatModel;
   }