Michael,

I check everything again and my original file as 2 solid where I thought there was only one, this is one of the reason why the file I send looks bad, it's missing a part.

But thing get even more complicated, I opened a second instance of Moi and opened my original file and here is what I have:

Moi Instance 1, saved original file




Moi Instance 2, original file



As you can see more clearly in the top view, 2 instances, same file but different objects. I double check by resaving the file in the first instance with the split view below, closing the second instance without saving, started a new instance and reopened the original file. Still get the same as below. I have no clue to understand what's happening here.

Thanks,
Felix