There may be, but a real question is what you want to accomplish by doing this. If you are trying to share customizations, you are much better off creating a
Global Template that holds the customizations and sharing that by placing it the Word
Startup Folder. You can share QAT customizations much more easily.
Importing the .exportUI file overwrites any user customizations. This can cause resentment (justifiable). It is like overwriting someone's Normal template.