Haven't testet this. My pedal always goes in bypass and stays there. I control my TF with a simple midi controller with up/down switch that send program change messages:
http://www.youtube.com/watch?v=Lfvve6xrwtY
I only send program change commands and no bank change and my pedal goes always in bypass mode or stays in bypass mode when it recieves a programm change. No difference between going forward or backward.
You don't need to send bank change to acces all programs/banks. 2:1 is programm 3 and 7:2 is programm 14.
http://artsites.ucsc.edu/EMS/music/tech_background/midi/Bank_Changes.html
