Works on Mac, though it is flaky. If you have “auto apply” on, you just have to click your hot key (if you use one) once and NOT hit ENTER. Same on the round trip back. But, I often find in N7 and N8 that sometimes after you “send back” in RX and “apply” it in Nuendo, it round trips back to RX with the raw audio again. Haven’t figured out exactly why because it’s different every time. Maybe I’m not crossing my toes.