Hi Pozero - I took a quick look at Poser. After you import your object (that had welding turned off when exporting from MoI), select it and from the Editing Tools, pick the Grouping Tool, and then try using Auto Group.

If that doesn't work, it looks like it is necessary to pick the polygons you want to separate individually and make them into their own group. It would be great if Poser would implement a "select connected" option to make it easier to select all the polygons that shared vertices with each other.

- Michael