MC3 messages won't pass through to secondary device

Going from Midi DIN out of MC3 controller to midi in of Soleman Midi Controller, midi out of Soleman to midi in of Headrush Flex Prime. I can send PC messages from MC3 controller and they pass through the Soleman controller and on to the Headrush unit just fine but when I send CC messages from the MC3 they do NOT seem to pass through the Soleman controller as nothing happens at the Headrush unit. I can connect the MC3 directly to the Headrush unit and it works fine. I also tried swapping out Soleman footswitch with my Tonex Pedal with the midi thru activated on my Tonex pedal and had the same issue. Tonex pedal would receive the CC message but it would not pass on to the Headrush unit. anyone have any ideas?

update: I was wrong about not working through Tonex Pedal it does work so I think might be an issue with the Soleman footswitch…

Yes, this is not an issue with the MC3. It’s the device in between that is not passing the messages through. The MC3 simply sends the MIDI messages. Since you’ve gotten it working with the ToneX, you’ll need to contact Source Audio regarding the Soleman MIDI Thru capabilities