I looked at yours as well. Haven’t had time to understand what a dx version means if I want to make changes. In one way it looks easier….
The easiest way I can describe is that the HOTAS is mapped directly to BMS commands. Push HOTAS button, BMS executes command.
Without using DX, like for example Hard~Deck’s profile, you use a ‘middle-man’ (Saitek software) to imitate a keyboard press. Push HOTAS Button, interpret to simulate keyboard press, BMS receives keyboard press, keyboard press executes BMS command.
DX is a much more direct way to access the BMS command. It is basically the same as mapping the HOTAS buttons (not the keyboard press, but the HOTAS button presses) manually in the setup screen.