CST MWS : Parameter Sweep : Deembedding of S-paramater

Again guys,...

I have an issue with the CST parameter sweep:

The deembedding feature in the Port dialogue, (reference plane)
cancels the value after a parameter sweep, or better: during.

I guess that only the first run is done WITH the modified reference
plane and the subsequent are not. A seperate run without
deembedding gives me the same values.

What are your experiences?

Thx a lot!