Mkae sure it's on a move that is booted by Sheer Force. IT's only removed if the move's secondary bonus is. ((so it's got to be boosted by SHeer Froce or it doesn't work.))
Np~ That's actually not a super well known mechanic unless you use Sheer Force users quite a bit. So, many don't know it. So, no worries lol. Happy to help though.