I've been following this tutorial
and I'm trying to see if importing a group will work. I grouped two objects to test, set a temporary texture as the base and set up a proxy material, then copied the group and assigned the base to the original and the proxy to the copy, created a dummy and linked the base to the dummy and the proxy to the base. I tried to export the dummy and the texture, but I'm still getting the "replace me" text on my group and the textures aren't showing up in the material editor (that is, they're there
, but for some reason it won't show the preview of the material in the box). When I try manually assigning the texture, it still doesn't work.
These are screen grabs of Max and CE3 (v3.3.9)