Well, you could save the figure as two different files and then import one back into the scene of the other, and then do the switch sides things...would that work? (I'm assuming the goal is to have the two figures in the same scene.) I don't know if you would then have crosstalk problems them...my techno info is meager. If you have all your posing and costuming perfect, you could export as an object and bring it back in...which might avoid the crosstalk issue. I'm speculating. Someone else will know for sure.