I've been sorting genre tags after years of idleness. There were many overlapping genre names. I have eliminated many of these, reasigning tracks to fewer tags. I use mp3tag for this.
However, it appears some record of the tag is remaining somewhere. In the Squeezebox ecosystem genre tags that have been eliminated still show up in LMS genre list, although the genre comes up as empty.
I thought a complete rescan on a new device (a PiCorePlayer) would solve the problem., but no. The empty tag categories have been recreated, meaning the tag information is somewhere in the information mp3tag has created during the tagging process.
How do I get rid of these no longer valid tags that are messing up my genre list?