How do I delete a tag that is locked

I’m trying to clean up my server with the correct genre’s, and a few have picked up data for the wrong movie, but won’t let me edit the tag or delete the wrong info, even when I click on the lock to unlock the info. Workaround?

The Plex Dance is supposed to clean all info out of the Plex database.
(except the ‘played’/‘unplayed’ status)

As a precautionary measure, check your Plex database for damage:

  1. activate debug logging (not ‘verbose’!)
  2. quit Plex Server
  3. wait 1 minute
  4. start Plex Server
  5. wait 5 minutes
  6. fetch log files and attach them here

Or inspect them yourself. Take a look at the Plex Media Server.log file and seek for messages about database corrupt or malformed.
If you find these, you may have to repair your database.
https://support.plex.tv/articles/201100678-repair-a-corrupt-database/