Light Maps will not import in Unreal 4.15.3


I’m having an issue where my light maps will not import on FBX models.
I am creating models in 3DS Max and exporting them as FBX.
When I create the models, I make channel 1 vert map UVs and channel 2 light map UVs.
After collapsing the stacks and exporting, I load them in unreal 4 and attemp to set light mapping channels in details.
However, I am seeing my channel 1 UVs as channel 0 (As it is supposed to) but not seeing my light maps as channel 1.
Instead, I am getting what looks like a auto generated light map.

Is there anything that I may be doing wrong?
When I import to unity I am able to see the light map UVs just fine…