You need to unwrap your Object twice:
One Unwrap (UV0) for Textures
One Unwrap (UV1) for the Lightmaps.
For Lightmaps, you need to make sure your UVs do not overlap and everything is within the 0-1 UV Range.
You need to unwrap your Object twice:
One Unwrap (UV0) for Textures
One Unwrap (UV1) for the Lightmaps.
For Lightmaps, you need to make sure your UVs do not overlap and everything is within the 0-1 UV Range.