Okay, you'll want to make a new Character Animation in the modeldata that the model is in. Then preview the model, open the left and right tabs, choose the bone that will move the entire stage (either the top one listed, or it will be called, like, stage_ALL or something) in the left tab, the new animation on the right, then go to the rotation Y box and change that value to 180.
Awesome! That worked, thanks a lot! (by the way your fairy fountain stage is amazing)