[WoW] delete a Key binding

I created a mapped key and had it bound to a key. I since deleted that mapped key and when I load game it says that isboxer is overriding that key. How do I delete that binding permently?

[MiRai]

I created a mapped key and had it bound to a key. I since deleted that mapped key and when I load game it says that isboxer is overriding that key. How do I delete that binding permently?

You've either got the same binding set somewhere else, or you've not exported your profile (and possibly re-launched if the clients are still running) since making the change.