Quote - You don't set "follow my morphs" with Genesis and later figures, it is automatic, if there is no corresponding morph in the clothing, it projects the morph from the figure to the clothing."

On some custom made morphs it works, on some it doesn't. I just can't figure out why.

On a Tri-Ax figure, like Genesis, it is automatic unless you specifically turn it off in the property editor pane > Quote - Quote: "If the morphs are not in the clothing then there is a menu option that will project the morphs from the figure to the clothing."

Do you mean the "Transver Utility" tool?

No. On a figure from before Genesis, right click on the clothing and choose Transfer Active *Morphs. *   

[Quote]When trying to tweak my own morphs on a Genesis2Female in a modeller, I reduce the mesh to base resolution, then export it as an *.obj and tweak it in silo, c4d or hexagon. The Genesis2F base geometrie is imported split up in multiple litte groups in my target modeller. Not the grouping you can see in DS. Grouped in little pieces. Why that? So I am forced to either use sculptris, that doesn't split in groups or using the DS/hexagon bridge. Is it a bug or is it purpuse?

DS does not split groups on export, normally. There is a setting that allows it, because Poser needed it before 2012/2014 but it is not default. Check your export options.