After many export / import experiments that still resulted in a broken mesh. I tried to remove MeshAnimation from the node, and how you see the models are okey.
So something is wrong with animation. The second screenshot shows that all coordinates are the same. I also noticed that body01 and body02 have a difference of 90 degrees (around its axis !!!), I don’t know if this has any effect or not.
P.S. I tried exporting / importing vanilla bodi01 .obj models and it also led to a broken mesh. I can not understand what is wrong...
