You are changing the pattern of the Material, which both wall types you have
created share. Lets say the exterior layer is Stucco. You are going into
the wall properties, to material, and then changing the properties of
Stucco, which will affect the material no matter where it is used in the
whole model. If you want the wall to have a different material/pattern,
then you need to duplicate a material as well, give it a new name, and
assign it to the new wall type you are creating. You might end up with
Stucco 1 and Stucco 2 materials, one assigned to wall 1 and the other to
wall 2.
wrote in message news:4865388@discussion.autodesk.com...
I t seems to be the exterior finish that is linking.