For any given Arturia synth in the V Collection, under Settings, MIDI, where one can see the list of CC mappings, for each entry, you can only select MIDI channel 1 to 16.
At the moment, if you set the Global MIDI channel to anything other than 1, you have to remember to set the MIDI channels of all CC mapping to match. Otherwise, the mapped parameters will not respond to the CC events.
Please allow an additional selection that allows that CC mapping to follow the global MIDI channel setting. The first entry in the drop down could be “Follow Global”, followed by the 1 to 16