Storing/using output presets (even though the manual reads output levels aren't included in saves), the -12 db button condition IS and therefore is a potential for having the output volume up, and switching output presets to one with he button off and creating a huge signal.
The pad probably should be anchored along with the output volumes and condition not included in preset saves just like the output volumes to avoid potentially disastrous jumps in volume.
Scenario: Someone has the unit set at 0db with -12db button pressed the board gain is set to receive that signal. Then someone autoload switches to a output preset saved with the button out. It would send a cranked signal to the system.