Nice model. Have you made IK chains for the seatbelts? Is IK on or off? Did you make poses for the belt positions? Did you make the poses with IK on or off? Or is the pic above how the model loads? Have you posed the belts back into position and saved the cr2? Did it still load as shown? We need more detail about your problem, I think. I haven't found any difference in the jps between any of the Poser versions. No differences in IK, ability to rename rotation dials or rotation orders either. I think that's a red herring.