Have you tried to manually save the state of your Fx before engaging the switch.
i.e. 1) make sure fx are in off state.
2) make sure switch on ground control is not active.
3) save state.
4) press footswitch.
It it could be as simple as the Kemper not transmitting the state of the fx to your foot controller, so you just have to do it manually.
Hi,
Yes tried that. It does not matter which state the fx are in, the on/off is just either sent reversed or received inverse. The weird thing is that it does work with a few of the switches, but not with all. It would help if I would know if it's the GSP C2 or the Kemper's fault. If anyone with the same setup could send me a correctly working rig with the Control2 settings, that would really help. Or even een backup of both devices (without any commercial profiles obviously).
Thanks!