I’ve been trying to create HLOD, and when I export a specific LOD and generating Light Map UVs, it seems like the lightmap UVs are always generating in the the channel 0, messing up my texture UV channel.
Am I doing something wrong or is it bug?
Thank you in advance
This is indeed a bug and has been reported as UE-29976. this is due to the UVs not being scaled to fit the correct bounds. Once the issue has been resolved, the fix will be added to the list of fixed issues for an upcoming hotfix or full engine release.