In #2337, @KlausD-GH mentioned getting duplicates of all cards when importing the same Catima export twice. I've been able to confirm this with an export they sent on the latest release.

I have not yet had the time to research what exactly causes this, but my guess would be that it is related to images (as this is less commonly tested part of deduplication).

Low severity (as duplicates aren't data loss, but a bit annoying) and low commonness (as most users won't import the same import twice). But fixing this would still be a good thing to do.

(Note to self: this export can be found back in a mail sent on February 13, 2025)