What I'm about to say is speculation, but I think it's true... For those confused about updating M3 w/o updating the body morphs pak, think about this: The M3 Update updates the BASE... Daz said there was some non-symmetry between M3's arms and I would believe the update fixed this in the geometry. So, that would lead me to believe that with NEW geometry, you need some new (ie, fixed) morph targets to move your new geometry around, hence the need for the Body Morphs update.