I would have thought inverted normals too, but OP states Maya and that the transforms are frozen and history deleted; which I believe is the same as resetting xform in Max. And I second baking in SP. :smiley:
It seems to happen mostly on meshes that are duplicated. in maya I've checked face normals, and they are pointing in the right direction. I've softened all edges and then hardened all the UV seams. I've frozen transformations and deleted history. All the meshes are triangulated. I've also made a cage. this was baked in…