If you navigate to a different Page and click on the Plan (before pasting), you set the point where the program is to paste your objects.
If you want your takeoff pasted in the same location as it existed on the "source page", do not to click on the Plan before pasting (use the keyboard shortcut Ctrl+V or the toolbar button to paste the takeoff, don't right-click because that is just like clicking on the Plan, then pasting).