First post here, I’m going through the recent threads, bought my A4 two weeks ago.

Anyways… Late reply but here it goes:

While the missing mod wheel mapping on the cv track is indeed a weird omission and would be nice in a future update, you can work around this using a performance macro and mapping your mod wheel to send the appropriate CC message (3,4,8 and so on… look for the mappings in the manual - any channel works for these). If your controller can’t remap the mod wheel one of these is the default cc message for a foot controller (3 or 4 IIRC), so this could be an alternative.

Earlier today I was messing around with cv envelope parameters mapped that way to the mod wheel, sliders, and a foot controller of an old Elka keyboard, worked great.