I have multiple models in Maya that have two UV sets; one set for texturing and the second set will be used for lighting. I noticed whatever set Maya has selected in the UV Editor is the set that’ll be exported and used in Unreal for texturing and lighting. But I want to use two different UV sets for texturing AND lighting. How would this work out? Do I need to use only one UV set or can I use separate uvs for different functions?
Check your import settings for lightmaps, you may be creating a set in UE4 automatically.