Manually sorting 'Media sources' in Videos

Quote from chewitt

personally I edit /storage/.kodi/usersdata/sources.xml as the format it simple and typing smb://user:pass@SERVER/SHARE is easier on a keyboad via SSH than using a remote in the GUI.

Oh man, that is so much easier I also just discovered the 'System Tools' addon which gave me vim \o/

I have one video source which I use the most, but it's listed last in 'Videos > Media sources'. I edited the sources.xml and put the source I use most often at the top of the list, but that didn't seem to affect the sorting.
Is there a way to (manually) change the sorting? If so, how?

I don't know if the trigger was a reboot or an upgrade to a later nightly build, but the one I put on top of the list, now did get displayed first

Is this supposed to be the way to customize the sorting?
If so, I can mark this thread as resolved. If not, I'd like to know the way it is supposed to work, assuming it is supported.