I recently started using the FM to expedite my backups instead of doing it via web site...I used the D&D method to get some files uploaded last week...BUT...it lost the UPPER case within the names which I rely upon, and it did it more than once...when I used the Upload button/menu, it worked properly.

However, I just now tried in on some files and it worked properly so not sure what the conditions were then vs now...but figured I'd report it anyway.