Baked Objects turn white when Scene loaded Additive

Hey guys,
weird behaviour: in my game the player can choose between different environments around the actual area of play. These environments get loaded Additive to the actual Level and have baked Lightning. The actual Levels do not have Lightmaps. While the environment in its own scene looks good I have the problem that environmental Objects with baked lightning don't show up as expected. They are basically black and white with hard edges. See image for Reference (left: Environment alone, right: Environment loaded Additive). The Lightmap itself is uncurropted and shows the correct shadows for the object in both cases. Any ideas?

 

*sigh*
Never Mind. I had wrong (reflective) material on these objects.. Sorry.