I routinely port DS props to Poser as OBJ, but I've despaired of getting figures across other than as 'store mannequins'.

Worse, DS' FBX export seems to misbehave more unpredictably than Poser's FBX import...

There is a route I've not tried, too busy with other notions: Mixamo has a semi-auto rigging facility, which you give a figure as OBJ, work through the long process of nudging its 'estimated' joint positions to compliance then exporting as FBX.

YMMV...