I believe I found out what's going on. Calibre places the derived columns in the opf file inside the ebook (not only the external opf file, unfortunately), and this information gets used if the ebook is added again.
So what we would need is that the GetFilename plugin overwrites the obsolete information from the opf file by the newly derived one, or an option to do that. Terisa de Morgan, would that be possible?
Last edited by Clark G. Flipper; 09-05-2021 at 02:26 AM.
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