First of all, let me thank you for a wonderful app that has been a game changer for me, I have both the remote CDU and Overhead Panel for the PMDG 737 NG. 700 and 600. This is not intended as a criticism but only an observation as a user. I was testing both the CDU and Overhead panel with the 600 aircraft.
Going through my preparations I came to the lights test on the Main Panel and noted that when I switched the Test Switch to BRT position the remote CDU screen went black, ( CDU in cockpit remained on with EXEC light illuminated, as it is supposed to do ) Remote CDU had no EXEC light illuminated. Releasing the switch everything returns to normal. So not a big deal , but inaccurate behaviour.
The other thing I noted was it was impossible to move the Circuit Breakers and Panel Light knobs on the Overhead panel. You could move them either way but they would jump back to the centre position and didn't affect the switches on the Overhead panel. Moving the switches on the Overhead itself wouldn't affect the switches on the Remote Overhead. They don't talk to one another. Everything else works both ways. So my question is , is this a bug or a limitation in the programming ?