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diff --git a/catalog-ui/src/app/ng2/services/attributes.service.ts b/catalog-ui/src/app/ng2/services/attributes.service.ts
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+++ b/catalog-ui/src/app/ng2/services/attributes.service.ts
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+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2021 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+import {Injectable} from '@angular/core';
+import {AttributeFEModel} from "../../models/attributes-outputs/attribute-fe-model";
+import {AttributeBEModel} from "app/models/attributes-outputs/attribute-be-model";
+import {DerivedFEAttribute} from "../../models/attributes-outputs/derived-fe-attribute";
+import {AttributeDeclareAPIModel} from "app/models/attributes-outputs/attribute-declare-api-model";
+
+@Injectable()
+export class AttributesService {
+
+  constructor() {
+  }
+
+  public getParentAttributeFEModelFromPath = (attributes: Array<AttributeFEModel>, path: string) => {
+    let parent: AttributeFEModel = attributes.find((property: AttributeFEModel): boolean => {
+      return property.name === path.substring(0, path.indexOf('#'));
+    });
+    return parent;
+  }
+
+  //undo disabling of parent and child props=
+  public undoDisableRelatedAttributes = (property: AttributeFEModel, childPath?: string): void => {
+    property.isDisabled = false;
+    if (!childPath) {
+      property.isSelected = false;
+      property.flattenedChildren && property.flattenedChildren.map(child => child.isDisabled = false);
+    } else { //QND - unselect everything and then re-do the disabling of declared props. TODO: put a flag on propertyFEModel instead to indicate who's causing them to be disabled instead
+      property.flattenedChildren.filter(child => child.isDisabled && !child.isDeclared).forEach(child => child.isDisabled = false);
+      property.flattenedChildren.filter(child => child.isDeclared || child.isSelected).forEach((childProp) => { //handle brothers who are selected - redo their disabled relatives as well
+        this.disableRelatedAttributes(property, childProp.attributesName);
+      });
+    }
+  }
+
+  //disable parents and children of prop
+  public disableRelatedAttributes = (property: AttributeFEModel, childPath?: string): void => {
+    if (!childPath) { //selecting the parent property
+      property.isSelected = true;
+      property.flattenedChildren && property.flattenedChildren.map(child => {
+        child.isSelected = false;
+        child.isDisabled = true;
+      });
+    } else {
+      property.isSelected = false;
+      property.isDisabled = true;
+      property.flattenedChildren.filter((childProp: DerivedFEAttribute) => {
+        return (childProp.attributesName.indexOf(childPath + "#") === 0 //is child of prop to disable
+            || childPath.indexOf(childProp.attributesName + "#") === 0); //is parent of prop to disable
+      }).forEach((child: DerivedFEAttribute) => {
+        child.isSelected = false;
+        child.isDisabled = true;
+      });
+    }
+  }
+
+  public getCheckedAttributes = (attributes: Array<AttributeFEModel>): Array<AttributeBEModel> => {
+    let selectedProps: Array<AttributeDeclareAPIModel> = [];
+    attributes.forEach(attrib => {
+      if (attrib.isSelected && !attrib.isDeclared && !attrib.isDisabled) {
+        selectedProps.push(new AttributeDeclareAPIModel(attrib));
+      } else if (attrib.flattenedChildren) {
+        attrib.flattenedChildren.forEach((child) => {
+          if (child.isSelected && !child.isDeclared && !child.isDisabled) {
+            let childProp = new AttributeDeclareAPIModel(attrib, child); //create it from the parent
+            selectedProps.push(childProp);
+          }
+        })
+      }
+    });
+    return selectedProps;
+  }
+
+}