You can transfer and migrate data from a customization or menu file from an earlier release using the Customize User Interface (CUI) Editor and the Migrate Custom Settings dialog box.
The Customize User Interface (CUI) Editor can be used to transfer data in a CUI, MNU, or MNS file to a CUIx file without modifying the original customization or menu file. The new customization file that is created has the same name as the original file, but with a .cuix extension.
You can also transfer customization information between files. For example, you can transfer toolbars from a partial CUIx file to the main CUIx file so that the program can display the toolbar information. In addition, you can move customizations from the main CUIx file to partial CUIx files, or from a partial CUIx file to another partial CUIx file.
If you transfer user interface elements that reference other user interface elements, such as a flyout, all the relevant information for that interface element is also transferred. For example, if you transfer the Draw toolbar, which references the Insert toolbar, the Insert toolbar is also transferred.
The following is an example of the Customize User Interface (CUI) Editor, Transfer tab. You use this tab to transfer user interface customization.

As you make changes to the customization in a CUIx file, the changes are automatically tracked. The tracked changes are used when migrating customization from release to release with the Migrate Custom Settings dialog box. In the Migrate Custom Settings dialog box, you can migrate any changes made to the standard CUIx files that come with the program with the new shipping versions of the files with the same name. You can avoid manually migrating customization, which might result in the loss of customization.
To transfer customizations (Procedure)