So I imported an fbx that I made in Maya 2014.
Looks great in Maya but it is screwed up and no smoothing in UE 4.8.3…
I posted a couple days ago in the AnswerHub, but I haven’t got a reply yet…
-have you enabled “export smoothing groups” in the export settings?
-do you get any error messages 
Yes, I enabled “export smoothing groups” and no, I don’t get an error.
Those don’t look like smoothing issues, looks like UV stretching to me.
Got it fixed, it was a normal vertex issue…
Thanks for looking into this!
Hey can you elaborate a bit more please I am facing the same problem. Thanks
I selected my object, chose the Normals menu item and selected Reverse…
I see. In my case it’s not even possible because they are already reverted (its a skydome). Thanks anyway
I am not sure why you would import a skydome, when you can make one easily in UE.
Try importing the FBX into the engine and select the “Import Normals and Tangents option”.
It’s a special skydome 
Thanks I’ll try asap (in about 3 days, not at home sorry)