Many developers often find it very confusing when trying to add a menu reference into an existing menu. The reference just doesn't want to be added. :) And what confuses even more is that some of the menus are added normally, while others are not! Let's look at an example: "After creating of a new menu - menu1 , I want to add 2 existing menus into it as references: Cust and Vend . I right-click the menu1 node and select add->menu reference. Drag over the Cust menu (and everything goes fine), and...