Talk:Riven Mods/@comment-96.255.243.208-20180918224657

" If a Riven Mod is unveiled while already being on the weapon it turns out to be for, it will remain on the weapon but not drain any mod points. This also allows weapons to reach negative mod point values. "

I unveiled a riven on my Lanka that was a riven for the Lanka and it was unequipped from my weapon. So either the bug did not work for me, or the bug has been fixed. I would guess the latter.