Hi and thank you for the welcome
Specs are iPad mini 2 32gb
Usb camera connection no audio as such.
Tried two keyboards Yamaha psr-343 and an Ion usb mini keyboard
I believe Both keyboards are sending midi data on channel 1
Also just to confirm if I record a midi track set to output to channel 2 the notes are correctly recorded and then played back by SampleTank. Cubasis does not seem to change the midi channel during live play only once recorded.
Hope that helps.