Hi Chris, well you'll probably need to reconstruct it to get a proper model in MoI - in its current form it's all made up of a bunch of triangle facets instead of having any curved surfaces in it at all. The areas that sort of look curved are not really, they just have a bunch more little flat facets there.

You could use the MeshToNurb command in Rhino to convert each triangle into a trimmed NURBS surface, which would then import into MoI but that will make a very low quality model so there isn't much you'll be able to do with it other than kind of use it as a guide.

- Michael