[DaveBlake]

Picard has a "remove all other tags option"

Its pretty essential to turn that option on to prevent these kind of problems.

But beware you wiill lose any genre tag values you added during ripping (most rippers provide some basic tagging), Picard does not add genre, and ytou may prefer some of the naming you had alreday entered.

I think the user is just inexperienced with Picard.