Look at your screenshot. The cabs are not in alphabetical order.
PS: The Treeview (the left side of Rig Manager) strictly sorts folders alphabetical. Can't be changed.
Thanks lightbox , yes the CABS in RM pop up menu are not in alphabetical order (as they are in Kemper). As for Treeview I was not aware to what cmbrowns refers, but now I know.
Looks like the CABS in Rig Manager are sorted by LastChangedTime... maybe.