Soft takeover is a well hidden feature in Cubase : it is neither documented, nor available in the ‘Device setup’ window UI. But it is functional, provided that you add 8 to the flag values stored for each controller in your Generic Remote definition .xml file. As an example, for a knob control of my MPD32 controller device, I replaced the ‘flags’ value of 1 in the following line :
K 13 (B5)1767561271
in order to be like this :
K 13 (B5)1767561279
The result is that the knob is usable as a soft takeover one, after relaunching Cubase.
About the NRPN Incr/Decr messages, FWIW, I found a workaround that can be used as long as you don’t need more than 16 controllers (as using this workaround requires that each involved controller needs its own dedicated MIDI channel). See here :
But indeed, the NRPN implementation in Cubase is flawed. Still expecting anyone from Steiny crew to give us thoughts/explanations about this…