Yes, but it's not that, the phase is also 90 degrees off. Sounds like a dodgy wiring set-up to me. Or recorded in M/S and someone forgot to decode it?
Well, I did (kind of) toss together some cable at the last minute to make this happen, a cable issue could be a problem. May be next week I will run the R09hr out of the 722 for UM and keep the M10 at home??