I want to be playing a walk animation on one track, and have a second track with a wave animation kick in at a certain point. The NPC should continue walking, but they should also wave. The second animation track totally takes over when I do this, even if I mask off everything but the waving arm (and in that instance the NPC falls down, since the legs are no longer animated). If I set the pre-extrapolate to none, the walk does fire until the wave is reached, but then it's 100% wave and 0% walk. What is the best way to accomplish this? Thanks!