We have prefab variants where we swap one of the materials out for a variation. So the original model has multiple materials. Then when reimporting changes done to the original model, the prefab variant “forgets” which material was replaced and it can show in the wrong place. We think it’s because the material indices gets changed and the override is set to the index number rather than the material name that was replaced. Is there a strategy for keeping the assigned materials? A bit of wishful thinking here but it would be great if the material on the prefab variant was also a variant of the original and that was information enough for Unity to keep the link.