Quote:
Originally Posted by ldolse
This is actually more complicated than you think. If Calibre's database isn't aware of the backup then it will be deleted as soon as you tweak the book title or author. Agree that it would be nice though. If the book is already in decent shape I always do this manually for same source to same source conversions - just hit the 'O' button, which will open the window in a file manager, and duplicate the source file, and then run the conversion. I also keep a backup of all my files online, so if something went awry I could always restore from there.
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ok - i did not test that, the backups survive "normal" book operations but not author rename. but solution could be to declare a backup folder & have all the .ebak, .mbak etc. dumped in there, unsorted, it is only a safety net after all.
As a new test I opened a containing folder - did copy + paste back on one title to create a copy of.... file. dragged that from it's subfolder into the calibre library main folder. then did author rename & also library check.
the copy of... file survived both processes & library check reported no errors. now it looks untidy there, but we do keep telling folks never to open calibre library so maybe that's a non-issue.