Quote:
Originally Posted by ownedbycats
While doing some library management I deleted a book that I didn't intend to. It's still in the recycle bin thankfully but if I restore it that won't put it back in the database. My last database backup is a few days old so I'd rather not restore to that. How do I fix this (preferably preserving all the OPF information)?

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From the recycle bin, move the book directory to your desktop or other location. From calibre's add books, browse to that directory and add it to your library. I'm not sure if this will restore the OPF information unless you have user Polish or ModifyEpub to update the metadata in your ebook.