The Transfer tab of the Customize User Interface (CUI) Editor can be used to copy user interface element data from a CUI, CUIx, MNS, or MNU file to a CUIx file without modifying the original source customization or menu file. A new CUIx file is created with the same name as the original source customization or menu file, except when a CUIx file is the source file.
If you transfer user interface elements that reference other user interface elements, such as a flyout, all the relevant information for that user interface element is also transferred. For example, if you transfer the Home - 2D ribbon tab, which references a number of ribbon panels, all referenced ribbon panels are also transferred.