Make the menu clipboard in the 'Edit Menu Bar' dialog work between different menu bars

[tstanley]

It seems that one cannot cut/copy/paste menu items between multiple menubars.  If I copy an item in one menu bar, exit the 'Edit Menu Bar' dialog, then open the 'Edit Menu Bar' dialog for another menubar the paste buttons are dimmed.  It would handy at times to be able to do this.  Thanks.

[Wolfgang]

This indeed would be quite useful. One scenario where I miss this feature is when building a popup menu that includes some menu items from the main menu.