This issue occurs when merging static meshes that have multiple LODs.
If they are using UV1 for lightmap index, after merging, the UV1 of the result for each LODs will all be differents, making the lightning totally screwed when displaying anything but LOD0.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-159104 in the post.
| 11 |
| Component | UE - World Creation - Worldbuilding Tools - HLOD |
|---|---|
| Affects Versions | 4.27 |
| Target Fix | 5.5 |
| Created | Jul 11, 2022 |
|---|---|
| Updated | Feb 13, 2024 |