Genesis 9 and the Blender Bridge

I thought I'd use the Blender bridge to send a Daz G9 character to blender. The import works and I can do my sculpting and whatever, but bringing it back into Daz after exporting it as an OBJ throws-up that 'Wrong Amount of Vertices' error.
Is there something I specifically need to do before using the bridge, or perhaps there's certain things I'm allowed to select before export from Blender? I don't have this problem when doing a manual export from Daz to Blender, so I'm wondering what the heck I'm doing wrong.
! REPORT