Hello, I have a sequence of movements that are done with the right arm. The animation is 1144 frames. I basically key the right arm joints at various frames and interpolate for the rest:

For the whole motion, the left arm and everything else is fixed.

I would like to generate a new motion that is the exact mirror of this one.

I noticed that if I use Pose Symmetry -> Swap right and left, that it is only valid for one frame at a time. I thought that maybe swapping every key frame would work, but it does not fully mirror the motion.

Is there a way to do this automatically without too much labor?

Thank you.