Hi Bob 
Thank you very much for your attention. But it was too hard for me to stop this issue as impossible 
So I remembered the way i solved this before as @christoph described it here.
It works! By putting an unique ID into the user row, I insert that ID into an user specific column while adding the new row. Having a relation in an User Table looking for that ID in the just added Row, I retrieve it’s Row ID through a lookup.
Done 
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