Just got the call. The said they have fixed the problem, I'll believe it when I ride in it!
Interesting, my service guy said there is now a bulletin for the noise, because many are experiencing it. He said on my vehicle there was a missing foam pad in the roof rail and that BMW have released a service bulletin for the proper adjustment of the back door and front door hinges. Maybe you can bring it back, now that there is a service bulletin?
I'm optimistic they've got it fixed. I'll let you know.