If you use davidfor's KoboUtilities plugin with calibre, it has options to check, compress and backup the database.
As for removing a sideloaded book, when I do that, the popup says "Remove from My Books" with a choice between Cancel and Remove.
I would tend to suspect that your database is inconsistent.
Last edited by DNSB; 07-05-2019 at 09:24 PM.
Reason: Who spells Remove with two o's?
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