The Uno4Kemper firmware is leveraging MIDI control change # 48/49 in order to step or scroll up/down the list of performances. And these follow currently the same logic as if you would use the navigation cross up/down buttons. If you had for example loaded slot 4 before, slot 4 will be loaded again in another performance. We are considering changing this logic and offering a user preference:
a. Slot 1 is loaded immediately as soon as another performance has been selected.
b. No slot is loaded when another performance has been selected until one of the five slots is explicitely selected. This way people could already navigate to another performance while they keep playing the slot/rig currently loaded.
This has nothing to do with MIDI bank select followed by a program change #, which can be used to adress any of the 625 slots directly - if your controller has such capabilities. Stepping through the internal patch banks of a footcontroller like Roland FC 300 is even another subject. The Uno4Kemper firmware totally overcomes any internal patch architecture, which is limited to 100 patches within the standard FCB1010. This way Uno4Kemper can scroll through all 125 performances and select all 625 slots of our Performance Mode.