iBooks - books deleted from library
Today I accidentally hit "Move books from iTunes" in the iBooks file menu on my mac. Without further confirmation iBooks started with the import. Now a lot - but not all - of my PDFs and eBooks are gone. I can't even recover them with TimeMachine because they don't show up in the com.apple.BKAgentService file in Library/Containers, no matter how far I go back in time.
When I opened iBooks on my iPad of course the books instantly disappeared. I can still see them on my iPhone as i put it into flight mode to prevent it from syncing. But I only have few of them actually loaded on the phone. Most of them were in iCloud. So that's not good for much more than a proof.
Any idea if there is a second location where books are stored? Or may be how to recover them?
Apple is releasing so much sloppy developed software recently... I really hate it.
Mac Pro, iOS 9.3.2