Are you trying to sculpt on the subdivided figure? Any morphs have to be done on the unsubdivided cage or it won't actually import the morph into the genesis figure itself since that's only 18K polys.

Also, the DSON importer just imports the figure. Because it is not native to Poser you really can't do development with it, hence the issues with GoZ. That has to be done in DS, so it's probably not going to fit your workflow.

You can use JoePublic's method of creating a CR2 from a genesis figure  and break the DSON link and try to sculpt on the low poly version of that, but you lose most of the abilities of Genesis.