Can One Create Motion Clip With Advanced Biped Rig?

Hi Dr. Sassi. Is this possible? I have been trying to do this, but I cannot seem to do it correctly. I tried baking the animation of Advanced Biped Rig’s “Master_con+” and its children, but Motion Clip cannot record it (I think it might only work with Joint Objects? but Advanced Biped Rig’s Joint Objects are controlled by “con+” spline objects).
Thank you