Make Duplicate Nodes in the Menu Tree
To make a duplicate node:
Select the node to be duplicated from the Menu Tree.
From the Edit menu, select Copy
.
Select a node in the Menu Tree below which the duplicate is to be inserted.
From the Edit menu, select Paste as Duplicate.
Example
To make a menu bar that is very much like the default menu bar but with a slight changed Edit menu:
Create a new menu bar.
Copy all popup menus but the Edit menu from the default menubar and paste them as duplicate under the new menubar.
Create a new customized Edit popup menu under your new menubar and define its menu items (some of which may be duplicates of items in the default menu).