What version of calibre?
My Test library has a metadata_pre_restore.db file, version 6.22 Check library reports no problems with that library - it's been there since March 2022.
Added: leave it there for now, then if no one comes up with a reason to keep it, remove it.
BR
Last edited by BetterRed; 07-08-2023 at 10:21 PM.
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