Blueprint does not reflect like imported C4D object

I imported a C4D Object to UE4 using the Datasmith. I want to manipulate the imported components, so I converted
the static mesh actors to static meshes and use them in my newly created blueprints. For the Materials I use the imported Materials from C4D. But the materials do not reflect like the original imported object. The colors seem to be right.

How can I fix this?