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Originally Posted by cybmole
I also tested with save to disc for a single title & I am pretty sure that save (original_epub) to disc does NOT update metadata, unlike with save (epub) to disc. That seems inconsistent , but it suits me.
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I guess that makes sense, there is no metadata driver for the ORIGINAL_EPUB format.
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What I've yet to puzzle out is the best way of adding any original_epub file(s) back Into calibre library, into the correct folders within the "black box" structure, and in such a way that calibre knows that they are back again. I suppose the answer be that if I'm wanting to revert to those I may was well delete the other formats, rename the file(s) and use add books, but I'd then lose any other colelcted metatdata for the title(s) in question
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You can drag a file onto the Book Details panel, to add it as a format, IIRC.
You could also use a custom script which extracts the {id} from the current duplicated filepath, and uses
Code:
calibredb add_format id /path/to/ebook_file
to add the format to the named book record via the command-line