When you begin to modify your menu suite, you must decide which strategy will work best for you:
to modify the original menus
to create new menus (these can be based on copies of the original menus)
Menus in your menu suite that are original menus from your solution provider have the symbol >> on the menu button to the left of the menu name. When you have your menu suite upgraded, the original menus will be upgraded, and any configuration changes that you have made to them will be merged into the new menus. For example, a menu item that you have added to a menu group – but where the menu group’s contents now have changed after an upgrade – will be placed as the last menu item in the menu group.
However, there will be cases where a straightforward merge cannot be carried out. For example, if you have added a menu item to a menu group that is no longer a part of the menu after an upgrade, then no merge can be made. Instead, the menu item will be placed in a Lost Items group at the bottom of the menu tree. After an upgrade, you can take action on the menu items in this group - either by inserting them somewhere in the current menu, in another menu or by deleting them. If the menu for the lost items cannot be found, a Lost Items menu will be created. The Lost Items group or menu is not visible to the users.
New menus that you have created are not affected by an upgrade, so if there are new menu items available to you from the upgrade that you would like to include, you will have to manually add them to your menus.
Creating Menus with the Navigation Pane Designer
Editing Menus with the Navigation Pane Designer