I don’t know this keyboard but I suppose you should modify some of the faders so that they respond to midi cc1 and/or cc11
with Novation Components keyboard software
see this little video Launchkey [MK3] - Custom Modes // Novation
which will allow you to send midi cc1 and cc11 to cubase whatever the vst
This is not a trivial task in Cubase. It would require a setup where you use a track for the input, then use a MIDI send to duplicate the message onto another track, where you would use the input transformer to change this duplicated message from CC1 to CC11. Afterwards you’d probably need to use a virtual midi loopback cable (to be installed seperately) to re-route these two tracks to the MIDI input section of Cubase.
If you are on PC you could install the virtual MIDI cable and then use MIDI-Ox instead. It is a freeware that lets you do what you ask for:
Do I understand you correctly, you want to keep the MIDI CC1 from the Mod Wheel and add MIDI CC11 of the same value on top of it?
If this is the case, use the MIDI Isert transformer:
Filter Target
( Type Is | Equal | Controller | And
Subtype (MIDI Controller No.) | Equal | CC1 )
Action Target
Subtype (MIDI Controller No.) | Set to Fixed Value | CC11
Function
Insert