I have the same problem with 3.0 and FCB1010. When I switch effects on/off with kemper buttons the state is not returned back to FCB1010.
I can use FCB1010 to control the KPA with Midi Global Channel Omni and Channel 1.
FCB1010 is connected with two cables One in Midi IN and other in Midi OUT.
In system menu / Perform mode menu I have assigned the Midi Device A to use Midi Out port and tested all the channels, no go.
Need to check some additional new settings in KPA.
Is it possible that KPA no more sends CC messages about it's state changes ? RTFM
Here is all that is mentioned in 3.0 release notes:
"MIDI commands can be triggered and transmitted to up to two external devices, whenever a Slot is loaded
in Performance Mode. Select “MIDI Settings” on page “Slot Settings” and select the MIDI program change
numbers associated with Slots of current Performance. In System menu, navigate to page “Perform Mode:
MIDI”, and use soft knobs 1 and 2 to assign a MIDI channel to each of the external devices. Use soft buttons
1 and 2 to determine whether the corresponding external devices are connected to MIDI OUT or MIDI
THRU. For your convenience you could also assign logical names to those two external devices.
"
Nothing about the changed CC behaviour...
I'll connect my KPA Midi OUT to PC and check this later with Midi OX