Odd export issue with dForce clothing

Doc Acme

Been having some really good luck with exporting DAZ figures out via FBX of late, then ran into this odd problem.  It's specific to when exporting dForce items out & imported into Lightwave. It appears to be a baking issue, but it's being selective.  I took the same character & exported out as both OBJ & FBX.  The OBJ looks as it should but with the FBX on the right, the shirt isn't correct whereas the pants are.  You can see the arm outline where the shirt looks ballooned. Shirt & pants were simmed & frozen and all geom in Base rez.

I first encountered this with a dForce Poncho so that's the only common factors I've noticed; posed, dForce & upper body clothing. In that case, the weight maps weren't correct.  Tried a baking test which put the Poncho maps in accord with the figures maps, but it still had distortion below Pelvis.

At this point, I'm not sure where or what to investigate. Suggestions?