Hi,
When copying and pasting an object with a Layered Material applied to it from one scene to another, Corona breaks all links to said material.
Also, if the materials for particular object are organised into tabs(Layers) in the the material manager (Bottle Mat, Jar Mat etc), when pasted into a new scene only the Layered Material will remember where it should be, all of the links will be placed into the 'No Layer' tab instead. Meaning any organising you've done of your materials in one scene will need to be manually replicated when copying a model to a new scene.
I'm using C4D R26.107 and Corona 8 (Hotfix 1).