I assume you're talking about the ribbon file.
By default it's only going to save the changes.
I actually use a special startup script to work on the ribbon file.
It deletes any .ui files that Creo would see on startup, and then copies the one I have on the network to the startup dir.
del "<path to=" ribbon=" file=">\creo_parametric_customization.ui"
echo f|xcopy "<path to=" network=" copy=" of=" ribbon=" file=">\creo_parametric_customization.ui" "%USERPROFILE%\<path to=" creo=" start=" dir=">\creo_parametric_customization.ui" /y /r
Obviously if it has admin in the name you would have to modify the lines for that, as well as the paths.
David Haigh