diff --git a/Composer/packages/extensions/visual-designer/src/editors/ObiEditor.tsx b/Composer/packages/extensions/visual-designer/src/editors/ObiEditor.tsx
index 8c1c35a255..7004490b90 100644
--- a/Composer/packages/extensions/visual-designer/src/editors/ObiEditor.tsx
+++ b/Composer/packages/extensions/visual-designer/src/editors/ObiEditor.tsx
@@ -5,7 +5,7 @@
 import { jsx } from '@emotion/core';
 import { useContext, FC, useEffect, useState, useRef } from 'react';
 import { MarqueeSelection, Selection } from 'office-ui-fabric-react/lib/MarqueeSelection';
-import { deleteAction, deleteActions, LgTemplateRef, LgMetaData } from '@bfc/shared';
+import { deleteAction, deleteActions, LgTemplateRef, LgMetaData, ExternalResourceCopyHandlerAsync } from '@bfc/shared';
 
 import { NodeEventTypes } from '../constants/NodeEventTypes';
 import { KeyboardCommandTypes, KeyboardPrimaryTypes } from '../constants/KeyboardCommandTypes';
@@ -44,9 +44,41 @@ export const ObiEditor: FC<ObiEditorProps> = ({
 }): JSX.Element | null => {
   let divRef;
 
-  const { focusedId, focusedEvent, clipboardActions, copyLgTemplate, removeLgTemplates, removeLuIntent } = useContext(
-    NodeRendererContext
-  );
+  const {
+    focusedId,
+    focusedEvent,
+    clipboardActions,
+    getLgTemplates,
+    updateLgTemplate,
+    removeLgTemplates,
+    removeLuIntent,
+  } = useContext(NodeRendererContext);
+
+  const dereferenceLg: ExternalResourceCopyHandlerAsync<string> = async (
+    actionId: string,
+    actionData: any,
+    lgFieldName: string,
+    lgText?: string
+  ): Promise<string> => {
+    if (!lgText) return '';
+
+    const inputLgRef = LgTemplateRef.parse(lgText);
+    if (!inputLgRef) return lgText;
+
+    const lgTemplates = await getLgTemplates(inputLgRef.name);
+    if (!Array.isArray(lgTemplates) || !lgTemplates.length) return lgText;
+
+    const targetTemplate = lgTemplates.find(x => x.name === inputLgRef.name);
+    return targetTemplate ? targetTemplate.body : lgText;
+  };
+
+  const buildLgReference: ExternalResourceCopyHandlerAsync<string> = async (nodeId, data, fieldName, fieldText) => {
+    if (!fieldText) return '';
+    const newLgTemplateName = new LgMetaData(fieldName, nodeId).toString();
+    const newLgTemplateRefStr = new LgTemplateRef(newLgTemplateName).toString();
+    await updateLgTemplate(path, newLgTemplateName, fieldText);
+    return newLgTemplateRefStr;
+  };
 
   const deleteLgTemplates = (lgTemplates: string[]) => {
     const normalizedLgTemplates = lgTemplates
@@ -91,23 +123,7 @@ export const ObiEditor: FC<ObiEditorProps> = ({
       case NodeEventTypes.Insert:
         if (eventData.$type === 'PASTE') {
           handler = e => {
-            // TODO: clean this along with node deletion.
-            const copyLgTemplateToNewNode = async (lgText: string, newNodeId: string) => {
-              const inputLgRef = LgTemplateRef.parse(lgText);
-              if (!inputLgRef) return lgText;
-
-              const inputLgMetaData = LgMetaData.parse(inputLgRef.name);
-              if (!inputLgMetaData) return lgText;
-
-              inputLgMetaData.designerId = newNodeId;
-              const newLgName = inputLgMetaData.toString();
-              const newLgTemplateRefString = new LgTemplateRef(newLgName).toString();
-
-              const lgFileId = path;
-              await copyLgTemplate(lgFileId, inputLgRef.name, newLgName);
-              return newLgTemplateRefString;
-            };
-            pasteNodes(data, e.id, e.position, clipboardActions, copyLgTemplateToNewNode).then(dialog => {
+            pasteNodes(data, e.id, e.position, clipboardActions, buildLgReference).then(dialog => {
               onChange(dialog);
             });
           };
@@ -128,16 +144,18 @@ export const ObiEditor: FC<ObiEditorProps> = ({
         break;
       case NodeEventTypes.CopySelection:
         handler = e => {
-          const copiedActions = copyNodes(data, e.actionIds);
-          onClipboardChange(copiedActions);
+          copyNodes(data, e.actionIds, dereferenceLg).then(copiedNodes => onClipboardChange(copiedNodes));
         };
         break;
       case NodeEventTypes.CutSelection:
         handler = e => {
-          const { dialog, cutData } = cutNodes(data, e.actionIds);
-          onChange(dialog);
-          onFocusSteps([]);
-          onClipboardChange(cutData);
+          cutNodes(data, e.actionIds, dereferenceLg, nodes =>
+            deleteActions(nodes, deleteLgTemplates, deleteLuIntents)
+          ).then(({ dialog, cutData }) => {
+            onChange(dialog);
+            onFocusSteps([]);
+            onClipboardChange(cutData);
+          });
         };
         break;
       case NodeEventTypes.DeleteSelection:
diff --git a/Composer/packages/extensions/visual-designer/src/utils/jsonTracker.ts b/Composer/packages/extensions/visual-designer/src/utils/jsonTracker.ts
index e6ab0647fa..96e010e425 100644
--- a/Composer/packages/extensions/visual-designer/src/utils/jsonTracker.ts
+++ b/Composer/packages/extensions/visual-designer/src/utils/jsonTracker.ts
@@ -4,7 +4,7 @@
 import cloneDeep from 'lodash/cloneDeep';
 import get from 'lodash/get';
 import set from 'lodash/set';
-import { seedNewDialog, deepCopyAction, generateSDKTitle } from '@bfc/shared';
+import { seedNewDialog, deepCopyActions, generateSDKTitle, ExternalResourceCopyHandlerAsync } from '@bfc/shared';
 
 function parseSelector(path: string): null | string[] {
   if (!path) return null;
@@ -117,7 +117,7 @@ export function deleteNode(inputDialog, path, callbackOnRemovedData?: (removedDa
   return dialog;
 }
 
-export function deleteNodes(inputDialog, nodeIds: string[], callbackOnRemovedData?: (removedData: any) => any) {
+export function deleteNodes(inputDialog, nodeIds: string[], callbackOnRemovedNodes?: (nodes: any[]) => any) {
   const dialog = cloneDeep(inputDialog);
 
   const nodeLocations = nodeIds.map(id => locateNode(dialog, id));
@@ -144,8 +144,8 @@ export function deleteNodes(inputDialog, nodeIds: string[], callbackOnRemovedDat
   });
 
   // invoke callback handler
-  if (callbackOnRemovedData && typeof callbackOnRemovedData === 'function') {
-    deletedNodes.forEach(x => callbackOnRemovedData(x));
+  if (callbackOnRemovedNodes && typeof callbackOnRemovedNodes === 'function') {
+    callbackOnRemovedNodes(deletedNodes);
   }
 
   return dialog;
@@ -168,14 +168,21 @@ export function insert(inputDialog, path, position, $type) {
   return dialog;
 }
 
-export function copyNodes(inputDialog, nodeIds: string[]): any[] {
+type DereferenceLgHandler = ExternalResourceCopyHandlerAsync<string>;
+
+export async function copyNodes(inputDialog, nodeIds: string[], dereferenceLg: DereferenceLgHandler): Promise<any[]> {
   const nodes = nodeIds.map(id => queryNode(inputDialog, id)).filter(x => x !== null);
-  return JSON.parse(JSON.stringify(nodes));
+  return deepCopyActions(nodes, dereferenceLg);
 }
 
-export function cutNodes(inputDialog, nodeIds: string[]) {
-  const nodesData = copyNodes(inputDialog, nodeIds);
-  const newDialog = deleteNodes(inputDialog, nodeIds);
+export async function cutNodes(
+  inputDialog,
+  nodeIds: string[],
+  dereferenceLg: DereferenceLgHandler,
+  callbackOnCutNodes?: (nodes: any[]) => any
+) {
+  const nodesData = await copyNodes(inputDialog, nodeIds, dereferenceLg);
+  const newDialog = deleteNodes(inputDialog, nodeIds, callbackOnCutNodes);
 
   return { dialog: newDialog, cutData: nodesData };
 }
@@ -196,7 +203,7 @@ export function appendNodesAfter(inputDialog, targetId, newNodes) {
   return dialog;
 }
 
-export async function pasteNodes(inputDialog, arrayPath, arrayIndex, newNodes, copyLgTemplate) {
+function insertNodes(inputDialog, arrayPath: string, arrayIndex: number, newNodes: any[]) {
   if (!Array.isArray(newNodes) || newNodes.length === 0) {
     return inputDialog;
   }
@@ -208,16 +215,19 @@ export async function pasteNodes(inputDialog, arrayPath, arrayIndex, newNodes, c
     return inputDialog;
   }
 
-  // NOTES: underlying lg api for writing new lg template to file is not concurrency-safe,
-  //        so we have to call them sequentially
-  // TODO: copy them parralleled via Promise.all() after optimizing lg api.
-  const copiedNodes: any[] = [];
-  for (const node of newNodes) {
-    // Deep copy nodes with external resources
-    const copy = await deepCopyAction(node, copyLgTemplate);
-    copiedNodes.push(copy);
-  }
-
-  targetArray.currentData.splice(arrayIndex, 0, ...copiedNodes);
+  targetArray.currentData.splice(arrayIndex, 0, ...newNodes);
   return dialog;
 }
+
+export async function pasteNodes(
+  inputDialog,
+  arrayPath: string,
+  arrayIndex: number,
+  clipboardNodes: any[],
+  handleLgField: ExternalResourceCopyHandlerAsync<string>
+) {
+  // Considering a scenario that copy one time but paste multiple times,
+  // it requires seeding all $designer.id again by invoking deepCopy.
+  const newNodes = await deepCopyActions(clipboardNodes, handleLgField);
+  return insertNodes(inputDialog, arrayPath, arrayIndex, newNodes);
+}
diff --git a/Composer/packages/lib/shared/__tests__/copyUtils/copyInputDialog.test.ts b/Composer/packages/lib/shared/__tests__/copyUtils/copyInputDialog.test.ts
index 918ef04eaf..1e0dd78bfd 100644
--- a/Composer/packages/lib/shared/__tests__/copyUtils/copyInputDialog.test.ts
+++ b/Composer/packages/lib/shared/__tests__/copyUtils/copyInputDialog.test.ts
@@ -8,7 +8,7 @@ import { externalApiStub as externalApi } from '../jestMocks/externalApiStub';
 describe('shallowCopyAdaptiveAction', () => {
   const externalApiWithLgCopy: ExternalApi = {
     ...externalApi,
-    copyLgTemplate: (templateName, newNodeId) => Promise.resolve(templateName + '(copy)'),
+    copyLgTemplate: (id, data, field, value) => Promise.resolve(value + '(copy)'),
   };
 
   it('can copy TextInput', async () => {
diff --git a/Composer/packages/lib/shared/__tests__/copyUtils/copySendActivity.test.ts b/Composer/packages/lib/shared/__tests__/copyUtils/copySendActivity.test.ts
index 8a30e66c53..12c7682f89 100644
--- a/Composer/packages/lib/shared/__tests__/copyUtils/copySendActivity.test.ts
+++ b/Composer/packages/lib/shared/__tests__/copyUtils/copySendActivity.test.ts
@@ -8,7 +8,7 @@ import { externalApiStub as externalApi } from '../jestMocks/externalApiStub';
 describe('copySendActivity', () => {
   const externalApiWithLgCopy: ExternalApi = {
     ...externalApi,
-    copyLgTemplate: (templateName, newNodeId) => Promise.resolve(templateName + '(copy)'),
+    copyLgTemplate: (id, data, fieldName, fieldValue) => Promise.resolve(fieldValue + '(copy)'),
   };
 
   it('can copy SendActivity', async () => {
diff --git a/Composer/packages/lib/shared/__tests__/jestMocks/externalApiStub.ts b/Composer/packages/lib/shared/__tests__/jestMocks/externalApiStub.ts
index c8e297b99d..7aa455f302 100644
--- a/Composer/packages/lib/shared/__tests__/jestMocks/externalApiStub.ts
+++ b/Composer/packages/lib/shared/__tests__/jestMocks/externalApiStub.ts
@@ -5,5 +5,5 @@ import { ExternalApi } from '../../src/copyUtils/ExternalApi';
 
 export const externalApiStub: ExternalApi = {
   getDesignerId: () => ({ id: '5678' }),
-  copyLgTemplate: (lgTemplateName: string, targetNodeId: string) => Promise.resolve(lgTemplateName),
+  copyLgTemplate: (id, data, fieldName, fieldValue) => Promise.resolve(fieldValue || ''),
 };
diff --git a/Composer/packages/lib/shared/src/copyUtils/ExternalApi.ts b/Composer/packages/lib/shared/src/copyUtils/ExternalApi.ts
index 2f86b9aa01..fe586e5924 100644
--- a/Composer/packages/lib/shared/src/copyUtils/ExternalApi.ts
+++ b/Composer/packages/lib/shared/src/copyUtils/ExternalApi.ts
@@ -3,7 +3,21 @@
 
 import { DesignerData } from '../types';
 
+export type ExternalResourceCopyHandler<CopiedType> = (
+  actionId: string,
+  actionData: any,
+  resourceFieldName: string,
+  resourceValue?: CopiedType
+) => CopiedType;
+
+export type ExternalResourceCopyHandlerAsync<CopiedType> = (
+  actionId: string,
+  actionData: any,
+  resourceFieldName: string,
+  resourceValue?: CopiedType
+) => Promise<CopiedType>;
+
 export interface ExternalApi {
   getDesignerId: (data?: DesignerData) => DesignerData;
-  copyLgTemplate: (lgTemplateName: string, newNodeId: string) => Promise<string>;
+  copyLgTemplate: ExternalResourceCopyHandlerAsync<string>;
 }
diff --git a/Composer/packages/lib/shared/src/copyUtils/copyInputDialog.ts b/Composer/packages/lib/shared/src/copyUtils/copyInputDialog.ts
index 5371b69e04..71eda21774 100644
--- a/Composer/packages/lib/shared/src/copyUtils/copyInputDialog.ts
+++ b/Composer/packages/lib/shared/src/copyUtils/copyInputDialog.ts
@@ -9,21 +9,22 @@ import { shallowCopyAdaptiveAction } from './shallowCopyAdaptiveAction';
 export const copyInputDialog = async (input: InputDialog, externalApi: ExternalApi): Promise<InputDialog> => {
   const copy = shallowCopyAdaptiveAction(input, externalApi);
   const nodeId = copy.$designer ? copy.$designer.id : '';
+  const copyLgField = (data, fieldName: string) => externalApi.copyLgTemplate(nodeId, data, fieldName, data[fieldName]);
 
   if (input.prompt !== undefined) {
-    copy.prompt = await externalApi.copyLgTemplate(input.prompt, nodeId);
+    copy.prompt = await copyLgField(copy, 'prompt');
   }
 
   if (input.unrecognizedPrompt !== undefined) {
-    copy.unrecognizedPrompt = await externalApi.copyLgTemplate(input.unrecognizedPrompt, nodeId);
+    copy.unrecognizedPrompt = await copyLgField(copy, 'unrecognizedPrompt');
   }
 
   if (input.invalidPrompt !== undefined) {
-    copy.invalidPrompt = await externalApi.copyLgTemplate(input.invalidPrompt, nodeId);
+    copy.invalidPrompt = await copyLgField(copy, 'invalidPrompt');
   }
 
   if (input.defaultValueResponse !== undefined) {
-    copy.defaultValueResponse = await externalApi.copyLgTemplate(input.defaultValueResponse, nodeId);
+    copy.defaultValueResponse = await copyLgField(copy, 'defaultValueResponse');
   }
 
   return copy;
diff --git a/Composer/packages/lib/shared/src/copyUtils/copySendActivity.ts b/Composer/packages/lib/shared/src/copyUtils/copySendActivity.ts
index 54c22113c4..929201c322 100644
--- a/Composer/packages/lib/shared/src/copyUtils/copySendActivity.ts
+++ b/Composer/packages/lib/shared/src/copyUtils/copySendActivity.ts
@@ -11,7 +11,7 @@ export const copySendActivity = async (input: SendActivity, externalApi: Externa
   const nodeId = copy.$designer ? copy.$designer.id : '';
 
   if (input.activity !== undefined) {
-    copy.activity = await externalApi.copyLgTemplate(input.activity, nodeId);
+    copy.activity = await externalApi.copyLgTemplate(nodeId, copy, 'activity', copy.activity);
   }
 
   return copy;
diff --git a/Composer/packages/lib/shared/src/copyUtils/index.ts b/Composer/packages/lib/shared/src/copyUtils/index.ts
index c04dd59fa5..d6bd0088a7 100644
--- a/Composer/packages/lib/shared/src/copyUtils/index.ts
+++ b/Composer/packages/lib/shared/src/copyUtils/index.ts
@@ -2,3 +2,4 @@
 // Licensed under the MIT License.
 
 export { copyAdaptiveAction } from './copyAdaptiveAction';
+export { ExternalResourceCopyHandlerAsync } from './ExternalApi';
diff --git a/Composer/packages/lib/shared/src/deleteUtils/index.ts b/Composer/packages/lib/shared/src/deleteUtils/index.ts
index 14d10ddfec..c237ba35fc 100644
--- a/Composer/packages/lib/shared/src/deleteUtils/index.ts
+++ b/Composer/packages/lib/shared/src/deleteUtils/index.ts
@@ -6,6 +6,7 @@ import { MicrosoftIDialog, SDKTypes } from '../types';
 import { walkAdaptiveAction } from './walkAdaptiveAction';
 import { walkAdaptiveActionList } from './walkAdaptiveActionList';
 
+// TODO: (ze) considering refactoring it with the `walkLgResources` util
 const collectLgTemplates = (action: any, outputTemplates: string[]) => {
   if (typeof action === 'string') return;
   if (!action || !action.$type) return;
@@ -25,6 +26,7 @@ const collectLgTemplates = (action: any, outputTemplates: string[]) => {
   }
 };
 
+// TODO: (ze) considering refactoring it by implementing a new `walkLuResources` util
 const collectLuIntents = (action: any, outputTemplates: string[]) => {
   if (typeof action === 'string') return;
   if (!action || !action.$type) return;
diff --git a/Composer/packages/lib/shared/src/dialogFactory.ts b/Composer/packages/lib/shared/src/dialogFactory.ts
index 585b5a6aed..7ed461a0f0 100644
--- a/Composer/packages/lib/shared/src/dialogFactory.ts
+++ b/Composer/packages/lib/shared/src/dialogFactory.ts
@@ -9,6 +9,7 @@ import { copyAdaptiveAction } from './copyUtils';
 import { deleteAdaptiveAction, deleteAdaptiveActionList } from './deleteUtils';
 import { MicrosoftIDialog } from './types';
 import { SDKTypes } from './types';
+import { ExternalResourceCopyHandlerAsync } from './copyUtils/ExternalApi';
 interface DesignerAttributes {
   name: string;
   description: string;
@@ -108,16 +109,26 @@ export const seedDefaults = (type: string) => {
   return assignDefaults(properties);
 };
 
-export const deepCopyAction = async (
-  data,
-  copyLgTemplateToNewNode: (lgTemplateName: string, newNodeId: string) => Promise<string>
-) => {
+export const deepCopyAction = async (data, copyLgTemplate: ExternalResourceCopyHandlerAsync<string>) => {
   return await copyAdaptiveAction(data, {
     getDesignerId,
-    copyLgTemplate: copyLgTemplateToNewNode,
+    copyLgTemplate,
   });
 };
 
+export const deepCopyActions = async (actions: any[], copyLgTemplate: ExternalResourceCopyHandlerAsync<string>) => {
+  // NOTES: underlying lg api for writing new lg template to file is not concurrency-safe,
+  //        so we have to call them sequentially
+  // TODO: copy them parralleled via Promise.all() after optimizing lg api.
+  const copiedActions: any[] = [];
+  for (const action of actions) {
+    // Deep copy nodes with external resources
+    const copy = await deepCopyAction(action, copyLgTemplate);
+    copiedActions.push(copy);
+  }
+  return copiedActions;
+};
+
 export const deleteAction = (
   data: MicrosoftIDialog,
   deleteLgTemplates: (templates: string[]) => any,
diff --git a/Composer/packages/lib/shared/src/index.ts b/Composer/packages/lib/shared/src/index.ts
index 0c0d75b91e..df4c90189c 100644
--- a/Composer/packages/lib/shared/src/index.ts
+++ b/Composer/packages/lib/shared/src/index.ts
@@ -13,3 +13,5 @@ export * from './appschema';
 export * from './types';
 export * from './constant';
 export * from './lgUtils';
+export * from './walkerUtils';
+export * from './copyUtils';
diff --git a/Composer/packages/lib/shared/src/walkerUtils/index.tsx b/Composer/packages/lib/shared/src/walkerUtils/index.tsx
new file mode 100644
index 0000000000..5538f89aed
--- /dev/null
+++ b/Composer/packages/lib/shared/src/walkerUtils/index.tsx
@@ -0,0 +1,4 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+export { walkLgResourcesInAction, walkLgResourcesInActionList } from './walkLgResources';
diff --git a/Composer/packages/lib/shared/src/walkerUtils/walkLgResources.ts b/Composer/packages/lib/shared/src/walkerUtils/walkLgResources.ts
new file mode 100644
index 0000000000..faf75eb066
--- /dev/null
+++ b/Composer/packages/lib/shared/src/walkerUtils/walkLgResources.ts
@@ -0,0 +1,42 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+import { walkAdaptiveAction } from '../deleteUtils/walkAdaptiveAction';
+import { SDKTypes } from '../types';
+import { walkAdaptiveActionList } from '../deleteUtils/walkAdaptiveActionList';
+
+type LgFieldHandler = (action, lgFieldName: string, lgString: string) => any;
+
+const findLgFields = (action: any, handleLgField: LgFieldHandler) => {
+  if (typeof action === 'string') return;
+  if (!action || !action.$type) return;
+
+  const onFound = (fieldName: string) => {
+    action[fieldName] && handleLgField(action, fieldName, action[fieldName]);
+  };
+
+  switch (action.$type) {
+    case SDKTypes.SendActivity:
+      onFound('activity');
+      break;
+    case SDKTypes.AttachmentInput:
+    case SDKTypes.ChoiceInput:
+    case SDKTypes.ConfirmInput:
+    case SDKTypes.DateTimeInput:
+    case SDKTypes.NumberInput:
+    case SDKTypes.TextInput:
+      onFound('prompt');
+      onFound('unrecognizedPrompt');
+      onFound('invalidPrompt');
+      onFound('defaultValueResponse');
+      break;
+  }
+};
+
+export const walkLgResourcesInAction = (action, handleLgResource: LgFieldHandler) => {
+  walkAdaptiveAction(action, action => findLgFields(action, handleLgResource));
+};
+
+export const walkLgResourcesInActionList = (actioList: any[], handleLgResource: LgFieldHandler) => {
+  walkAdaptiveActionList(actioList, action => findLgFields(action, handleLgResource));
+};