The manual suggests that switching between Bank A and B effects the faders and encoders, not the switches, pads, or any other controllers. HOWEVER, it does seem to effect the setting of Volume encoder. Using Bank B always sets the Volume encoder to Absolute, CC-0, no matter what I have the Bank A Volume set to. I can actually edit this by choosing Bank B, Edit, twist the volume, and edit the parameters. However, these settings can't be saved, and the behavior returned to CC-0/Absolute whoever I restart the machine or change between memory recalls.
I suspect that the Volume encoder is NOT supposed to change with the bank settings, and this is some strange bug. The hard memory files probably don't have a place to store "Volume Encoder-Bank B Settings", and therefor the encoder just takes on whatever "reset" settings of any controller: "Absolute/Channel 1/CC-1".
This isn't a huge problem as I don't use Bank B much. But I do use it for Organ Drawbars, and when I do, suddenly I can't change my volume! Clearly this is something that could be fixed in a firmware update.