Thanks again, John.
I don't know if I was clear before.
I can correctly configure all the buttons on my Honeycomb Bravo (and on Alpha, too), including the buttons to select the different autopilot modes (HDG, NAV, APP, REV, ALT, VS, IAS), but the left knob to set, with the right knob (incrementing or decrementing), ALT, VS, HDG, CRS and IAS does not work for me (and it used to work for me). Neither of the two knobs, neither the right nor the left, I can configure. When I move the left one, FSUIPC does recognize the different knob positions, but when I move the right one, it does not recognize it, neither to the right nor to the left.
I repeat, until a few days ago I had all this set up perfectly, both for the Milviz C 310 and the PMDG 737-800, but suddenly it stopped working.
I'm starting to get desperate and frustrated with this situation because I don't understand what could have happened other than upgrading to the latest version of FSUIPC. At least I am not aware of having done anything else differently and with the previous version of FSUIPC everything worked fine for me.
Again, thank you very much in advance.