Modeling tools editor mode AutoLOD Textures difficulties

Hi everyone !

My art team produced meshes for High end hardware using nanite and lumen. I’m working now on a port for native VR with quest 3. My goal is to use AutoLOD from Modeling mode and reduce polycount of props and environment. Unfortunately, I’m strungling to achieve that, I’ve an issue on every mesh I try to manage with this tool : Their left side texture doesn’t match with the original mesh. (The right side is perfect, lower polycount, nice lowered textures)

Do you have an idea if it’s a bug or if I’m doing something wrong ? or perhaps all meshes produced by my team have a problem I don’t know but it doesn’t seem to be this.

Thanks a lot for your help !