Dear friends,

it's fascinating! Good response and very technical!
With your help we managed it.
What we did:

• went into Poser, opened our item
• started an 1.obj export of our figure, here just rButtock
• unmarked all properties
• import of 1.obj into RDS (new scenenry)
• made the necessary changes for this morph
• saved this morph as 2.obj
• now (tataa!) added this new 2.obj morph into our
  figure. It was accepted and is working fine

Sometimes very tricky. Unfortunately uncomfortable, if you try and try for several hours with no results. Thank's for all these members in here, who are sharing their knowledgement.

Yours

Daniel + Matthias