As I understand it, the Audya Registrations save all the information in a separate file, unlike all other arrangers, who's Registrations merely POINT to the files, wherever they may be stored.
I found this out the first time I saved a Registration that included a style from the USB drive. Even after removing the drive containing the style, the Audya Registration was still complete.
This is truly innovative, and also what saved your bacon!
DonM