Trimming clips in Animation Mixer that have Clip Warps

[dwigfor]

I've run into problems with trimming clips in the Animation Mixer that have Warps on them. I have keyframes in the middle of the clips adjust their timing. What I'd like to do is find a spot that I'm happy at, and then Trim Before (or Trim After). When I do this, however, it changes the keyframes, modifying the timing..

Any solutions?

Thanks
-Dave