Bug or feature? If you're in 'Learn Alert Time' and say, during an intermission, you decide you've got some time and you want to map a Submaster to a fader, EOS won't let you using the 'Fader list' Tab 35. When you pick anything under target. it just bounces right back to 'Unmapped' Once you stop Learning Alert Time, it goes back to allowing Submasters to be mapped.