According to the Player manual, in System Settings you can choose what happens after you load a new bank:
"Slot 1" - automatically loads Slot 1 of selected Bank
"Keep Slot" - if current Slot is 3, Slot 3 of the next selected bank will be loaded automatically.
Would be nice to have the possibility to select a third possibility "Keep Loaded" that does not load any rig until you press a Rig 1/Rig2/Rig3/Rig5/Rig5 button.
In this way even if you press by mistake Bank Up/Down, your performance does not get ruined.