A little late, but is the model triangulated? If the model is on quads, half of the triangles seem to be skipped during the conversion and thus disappear on the final model.
Yeah, this is happening to me too. Multitexture models also only load one texture unless I break them into individual...
jokes aside, anyone else who saw the northern lights tonight, what did you think, i thought they were beautiful for a while, before it went to a vague pink
maybe later they'll pick up again