The static mesh is coming in fine. It might be that Im not exporting them as one correctly. I use the UE4 FBX Exporter Version 1.0b. In I select both meshes and the populate the FBX export dialogue window. They are then exported as two separate meshes into my ue4 folder. In my export settings I have set it to 2014. I’ve tried with smoothing groups both on and off. Tangents and binormals on and off. Else “convert deforming dummies”, and “preserve edge orientation” has been on and the rest off. I’ve got the units set to centimeters, and animation, cameras, lights, and media off.
If you cannot see anything wrong here, Ill try to re-create it. Might be as you say that my mesh has gone corrupted or something.