Hello there,
Thanks for bringing this to our attention.
Could you please provide screenshots or screen recordings showing the issue in action?
I've been trying to reproduce this; however, I haven't had luck so far.
I have a "Scene_A" file and a "Scene_B" file, respectively.
Both scene files have the same objects (geometry and names) and the same materials (names and textures loaded)
I'm copying/pasting objects from Scene_A to Scene_B, and every time I try, the objects paste correctly, and the materials get duplicated (meaning C4D is copying the materials from the source file).
So far, this is expected, correct?
Please provide me with some additional feedback/steps/info so that I can understand the issue you're reporting and successfully reproduce it on my end.
Looking forward to hearing from you soon.
Have an amazing weekend ahead.