message: work for the bug/cv2-2000-ghost-page-has-duplicate-element
diff: @@ -263,7 +263,7 @@ export class DragDropSurveyElements extends DragDropCore<any> {
  // ghost new page
  if (this.dropTarget.isPage && (<any>this.dropTarget)["_isGhost"]) {
  - (<any>this.dropTarget)["_addGhostPageViewMobel"]();
  + (<any>this.dropTarget)["_addGhostPageViewModel"]();
  }
  // EO ghost new page
  