I'm sorry if this is a silly question and I've had a quick search but can't find anything about it, but I've been messing around and managed to make a haimes of things and my backup drive has gone kaput (it's currently resting in the freezer in the ultimate desperate act to try and recover data!)
I'm now left with my main library, and several-dozen subdirs where I'd been playing around with another library. These subdirs contain the books, cover and .opfs. I can import all the files (epubs) from Calibre, but it seems to
leave all the metadata from the .opfs behind.
Is there any way by which I can import these folders in bulk including the metadata? Right now I'm having to go to each folder in Nautilus (I'm using Linux), select the opf and open it with Calibre, then go to Calibre and manually add the book to the entry. It's a pain to say the least