Hi you all, I’m on tour with a C1500 console and it has Dante card in it. I am able to record all tracks on Reaper but I tried to record drummer mix the same way, sending mix output to Dante 51-52 on I/O card 4, but nothing came to Reaper.
I was ready to start the show so I didn’t have time enough to explore it.
Maybe choose mix as input in 2 channels and that’s the way.
I/O → Output Tab → Proper I/O Card on the top row → Route
Do it all the time. 
I also do it all the time, recording both input direct outs and mixes. You should not have to send the mix to an input first to record it.
One thing to note though, the dLive does not do delay compensation on everything going out the Dante card. Expect an input direct out to be several samples early compared to an aux, and possibly a different amount early from other mix types.
For some uses that will not matter, but I often take a live record mix and add a little more of a track here and there to avoid remixing the entire thing. In a case like that if you do not align things then you will get nasty comb filtering. I usually find a place where the mix is dominated b a single track like an MC mic to line things up.
Good point! Can be checked in a daw with a transient signal in both an input channel and this group.
I always have a broadcast matrix, where I compensate a few db up & down on groups depending on the venue we play. Ambis also go there between the songs.
For recordings the record sends on the VSC tab are even better than tie lines for inputs.
Something else to check, are the missing Dante channels mapped(routed) in the Dante Controller setup? Not wanting to assume, if they aren’t patched in Controller, they won’t come into Reaper.
It was mapped in Dante Controller, from 1 to 64. Buuut I’m thinking now… maybe it was not routed on reaper matrix, I’m coming today to the studio to fine-tune the mix and I’ll check it out
Were you using virtual soundcheck record outs for recording? If you allocated channels with that system that overlaps the outputs you’re using for the mixes, it’s going to override it.
Finally I was wrong, it was not routed on Dante Controller. Because I have 40 channels on stage and patched on DC from 1 to 48. And I am using Dante 50-56 for master rec and other different mix recordings.
There are many different patching everywhere. XD