Please see
post #2.
All interested parties, please feel free to try out with some of your own books and report back. Better not upload them here yet, though
All feedback welcome (
I think), particularly if the scrambled book reports errors which weren't in the original.
@HarryT,
I may have been a bit lenient with zapping the metadata. There appears to be varied opinion on what's OK and what's not. As the Voice of the Moderators, if you could check a few scrambled OPF files and feedback the problem areas, I'd be grateful. Thanks.