Fbx importer: Issue when reimporting staticmesh base LOD and there is some custom LOD

When we reset the material to fbx we should take care of the LOD since we will change/reorder the material slot array.

Import Material1.fbx

open the staticmesh and import LOD 1 with the same fbx (Material1.fbx)

Reimport the staticmesh with a new file (content browser right click)

choose Material3.fbx

When the material conflict windows pop choose "Reset To Fbx"

RESULT: the LOD 1 change from green to blue