Desktop Central suddenly shows up 5 year old Patches ...

Desktop Central suddenly shows up 5 year old Patches ...

... that don't match as well. For more than 200 Systems!
Installing those patches on a testsystem fails (See attached screenshot)
For now, all systems are marked as highly vulnerable. So its not that easy
to figure out the machines that are really highly vulnerable now.
DC build is 10.0.236, restarted DC-Service, synced Patch database several times.
Old patches remain after Patchscan of all Systems after syncing.

Any Ideas?

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