Mix down has no midi instruments

I’m sure it’s very basic so apologies in advance for my newbiness. I have recently purchased Cubasis. I’m triggering a DM1 drum machine using inter app audio I have a couple of other tracks of recorded audio and a midi track of bass from Animoog. It all sounds lovely when played back (presumably I’m just hearing the audio from Animoog direct from the app?) but there is no level on the Animoog midi fader in Cubasis and no Animoog when I mix it down. Thanks in advance for any help!

MIDI doesn’t contain any audio, just note information, that’s why there’s nothing to mixdown.

You need to create audio tracks for each of those instruments, check out this post:
http://www.steinberg.net/forums/viewtopic.php?f=183&t=58509