v3 textures don't work on the v4 to v3 character any more than v2 textures worked on the v3 to v2 character. the "hybrid" character is purely for fitting v3 clothes to a default v3 body.

personally, i would have much preferred a unimesh mapped v4 alternative than a morphed and regrouped figure that didn't actually have any versatility.  but that wasn't what was promised, ever.