SpamSieve Plug-In Not Showing in Apple Mail Preferences

I have recently had to wipe my Mac and restore using Migration Assistant. The only issue I have found since is that Apple Mail plug-ins are not showing for activation in Mail Preferences. I have tried un-installing and reinstalling the SpamSieve Apple Mail plug-in, and it’s showing in ~Library/Mail/Bundles, however nothing in Apple Mail Preferences to actually activate. This is the same situation with a couple of other Mail plug-ins too.

MacOS 10.15.1

Please see “Ask Mail to Reset the DataVaults” and (if necessary) “Delete the DataVaults Folder” on this page.

Had to delete but all fixed now. Thanks!