Hi i have third person game project. I use avatar mask to split upper and lower body animation. And i uncheck the bone called "aimer" in 2 avatar mask, because i want to use it for aim. But in animation still using the "aimer" bone and i can't change it's rotation. Upper body avatar mask: Lower body avatar mask: Why the animator playing kerframes about "aimer" bone? I tried to remove ker frames about "aimer" rotation in animations, but it's still playing.