Cleaning up past naming schemes

I've used a ton of different, but sometimes confusingly similar naming schemes for the Tag to Filename or Filename to Tag functions. The fields now remember all of them, making auto-complete next to useless. Is there a way to clear the history for those fields aside from reinstalling mp3tag?

If that's not possible, I was thinking I should just set up actions for moving songs to my usual places and update those when necessary, but Format Value -> _DIRECTORY moves the whole folder. Is there a way to make it only move the music?

Click on the small button on the right side of the format string edit field.
It has options to delete a single or all saved strings.

The action Format value -> _FILENAME can move files.