Can anyone help me with this strange phenomia?If I change the values in the PMDG 737kbd.ini files & then start the aircraft, those values do not appear as in the file? and then I see that the file has been overwritten. And how is it that the values in the 737kbd.ini file get altered by the PMDG 747 aircraft, yet it's in a completely different folder? This is a nightmare, can anyone shed some light on this, is anyone else experiencing the same problem?Howard

Make sure you use the PMDG key mapping utility available in the FS Menubar dropdown under PMDG. I'm not sure but try setting it with each model loaded. See if that helps.