In reality, NO! You'll have to back up the User Style Files, Registrations, Midi Files and MFD separately. If you wish, you can store them all in a single folder, but the actual backups must be done individually.
Sorry to hear about your mishap with the airlines. Gotta' have backups, even if it's just in the form of a laptop loaded with midi files converted to MP3s and a quality mic. With just those two components you could have pulled the job off, your audience would have been happy, and you would have been $800 in the black.
BTW: Did you ever get your orriginal keyboard back from Texas? And if so, was it in one piece?
Good Luck,
Gary
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Travlin' Easy