When using the viewer the model is shown correctly
Inside the editor, the hood element - aluminium material (see image) is transparent. The contour is marked but the element is transparent. If i switch the transparency (even I don't need it) the element appears. But once saved (with transparency activated), the item disappears again.
Exported as 2016 FBX, also as 2013 FBX from 3dsMax 2016. It's an animated model.