[ownedbycats]

Enhancement request, if feasible: A prompt when the author or series URL changes in Calibre. Keep the original URL, or update to new one.

I downloaded a fic on AO3, and this populated the author URL (per the "set Calibre Author URL" setting). I later downloaded a fic from the same author on FanFiction.net, and this automatically changed the URL.

This would also help when there's multiple series sharing the same name.