I don't bother with the extra layer of encrytion. I thought you were trying to run a backup to a local location (rather than S3/AWS - Amazon Web Services). Bottom line is - sorry I have no idea. I'd be inclined to just test it and see what happens. If you try restoring to a fresh AWS appliance it will be really quick (and cheap too) then you'll know.
Ok sorry I think I get you now...
I don't bother with the extra layer of encrytion. I thought you were trying to run a backup to a local location (rather than S3/AWS - Amazon Web Services). Bottom line is - sorry I have no idea. I'd be inclined to just test it and see what happens. If you try restoring to a fresh AWS appliance it will be really quick (and cheap too) then you'll know.