is this a bug or a "feature"?

When I create a "Install Directory" Bundle, ZCM uploads everything as it should.
My source directory is a plain old directory with some files in the root, and lets say 10 subdirectories.

When ZCM copies all the files to my target machine, it scrambles -ALL- files into one directory!
There is no check/radio/whatever button for, lets say: "keep structure".

I need the directory structure that existed before? Is this the behavior it s supposed to have?