Inter app multichannel issues

Long time Cubase user, newbie Cubasis user. I’ve been trying to set up Cubasis with iSymphnoic Orchestra. I’ve got 3 midi parts in ISO, on midi channels 1-3. Cubasis can see the app fine (if I start ISO first), and I can select it on ch1 no problem. However I can’t find a way to access ch2+. I’ve changed midi send and receive channels in the inspector, also the midi port ( virtual midi, network device etc), but nothing seems to work. Thanks in advance for any help.

iPad mini 2, iOS 8.0.2, Cubasis 1.8.3

Bump for ideas on this