Issues importing LODs

Hi All,

New to Unreal engine here and having an issue with LODs.

I am using the meshes from Quixel megascans (the red mushroom). This mesh has multiple variations of the mushroom in the one file.

When I try to add the LOD for one variation, it just stacks all the variations… any ideas how I can fix this? It must be something simple I am missing.

Thanks!