Right now, if you add a submenu as the first item of a submenu using the menu editor, the function does not work correctly. It will currently display all of the items in the sub-sub menu in place of the items in the sub-menu effectively losing all of the items in-between (see screen captures).

Also it would be nice to be able to easily rearrange items when using the Menu Editor. Currently to re-order items in a menu using the menu editor you have to recreate items in succession to move them to the bottom of the menu.