Smart Materials and grunge maps in material mode

[nuckles]

I am looking at the steel painted stained smart material smart material and in a fill layer there is grunge_map_012 in the material mode slot. If I try to replace this map with another grunge it is not allowed. I am having a hard time understanding what is happening in this layer.

It is a grunge map in the slot or a material? How would you go about changing this map to something else? 

[Léna Piquet - Froyok · Accepted solution]

It i a grunge map but it sits in the material slot, which seems to be a bug.

You can remove the resource to restore the UI with all the individual channels and load your new resource there instead.