No Calculated Columns from SAP HANA View in Segmentation Object configuration

Hi experts!

I have created a new segmentation object in our SAP Marketing Cloud tenant. As data source, I am using a newly created HANA View as basis for the segmentation object.

I am now facing the problem, that I can see and manage all output data fields, but not the calculated columns of the HANA view. I also tried to import a very simple calculated column with the logic 'Test'.

Do you have any idea how to handle this issue?
Thanks
Christian