this all reads like rollback protection? oversaw to issue that warning when reading A14 → A13.
If you’re unlocked you can play with the vbmeta partition to edit manually, but it seems involved - or just reflash a complete current vendor image that the vbmeta is happy with. (I always thought one can just erase vbmeta and disabling verity/verification when unlocked, but it’s long ago that I looked into this).