I can't get this to work the way I think it should either. I've tried all the permutations (I think). My exp1 and exp2 are set to "global" in global settings.
1. Wah is disabled in all my presets and snapshots. When I want it, I enable via exp toe switch, at which point the exp pedal controls the way position parameter.
2. When I change snapshot, I expect that change to be seamless for everything, including wah (enabled and its position controlled by exp pedal).