I managed to write a VB script for DxDesigner (thanks to one of you, from where I copied a big portion of the code), which automatically sets specific parts to "unplaced" in all variants of a design. Currently it identifies the parts by the RefDes prefix, e.g. TP for testpoints or MH for mounting holes. It would be better to identify the parts by their mounting technology, represented by the part property 'MNTG TECH'. But up to now I didn't manage to do so. Any hints?
The current version of the script is attached here.
Thanks for your help