It seems crazy that this can’t work. This is exactly what the control room in Cubase is for. I could understand the limitation if you were using non steinberg DAW but the control room is a ‘virtual’ hardware control room with the routing to match.
On the MR 816 the headphone mix can be the same as the monitor outs if you set it that way in the control room, there isn’t a separate MIX out, DAW out ,analogue out. You just assign which ever cue mix to come out of whichever output you’ve set up in the control room, this doesn’t use up a mix for your monitors though.
I could understand this limitation if you were using the physical analogue outs into headphone amps, but the UR has two headphone amps built in. All you would need to do is have the mix out going to the headphones AND the monitor outs which is what the MR816 do.
Cubase control room cue mixes should handle the routing from Cubase , there is no need for the UR to need to do this if you’re using Cubendo. The way it is now seems to be that the UR is doing the routing Cubase control room should.
Lets look at this from the start again;
Cubase has 4 cue mixes built into its control room;
you have to use the 'MIX out’s ’ for each cue mix;
HOW DO YOU THEN SEND ANYTHING TO YOUR MONITORS and be able to hear the direct monitored signals as you’ve used all your mixes?
there has to be something I’m/We’re doing wrong here.