Hello PaQ,
I did the UV texturing with RizomUV. We still had an old version here that I didn't know about.
There was a big fight because I didn't enable the "weld edges" option in the MOI FBX export settings and so all the individual parts were in Rizom. I was not able to merge them well. But once the penny dropped, and the weld option enabled in Moi it worked just like with the seams you showed.
I have since made the three versions I need - and they are perfect.
Thank you very much for the strong push into a topic, which I have always tried to avoid until now.
Best Mala