ZBrush Update Layer Blendshapes



I wanted to check and see if people knew a way to update ZBrush layers when we update the base mesh of a ztool. I created a character, then created layers for blendshapes. Later, I made some edits to the base mesh (UVs, mouth bag shape etc). When I bring that back in to ZBrush using GoZ, I get the updated ztool with correct UVs and shape changes, but the blendshapes in layers do not update. So now, I have blendshapes that not only move the eyelid, but move all the other points a little bit that have changed. Is there a way to update the blendshapes?