Yup...it's mapped to Scroll Document Down, but it still shuts off the automation. With or without a pre-roll.
Scenario where I need this: Song has intro of undetermined length before lyrics start to come in. So in this case, no pre-roll at all. Go to song in the set list, and automation track is enabled on selection (orange). Soon as I hit the AirTurn to start the scroll, the automation track goes blue, and all automation is ignored.
IFF I manually tap the automation icon again, turning it orange, it starts following the automation track again. But if I double-tap the AirTurn button (bumping things down twice, but toggling the automation icon from orange to blue to orange again), it HAS re-enabled automation, but because it is time-based and not position-based, the automation I set up to stop the scroll until I restart it stops N seconds later, not at the spot where I need it to.