The add/sal formula that is chosen for the nametag cannot be seen in global change, query, export or import. So, if you need to delete a formula from the add/sal table, you can't if it is used on a nametag.

Of course, the functionality of the nametags is so poor that not ever using it is the best option. It seems, though, that if you've entered information there once, it's there to stay. Having data that I can't get to is the opposite of what a database should do.