Perhaps I am not explaining clearly. The X52 Pro has, on the throttle, a mouse stick, a left mouse button (M1) and a combined right mouse button and mouse scroll wheel (M2). These are shown on the generated diagram. If you refer to refcard https://edrefcard.info/binds/rizmjk you will see M2 annotated but on this refcard https://edrefcard.info/binds/krxnxr where the M2 assignment is different there are no references on the diagram. If you download the 2 refcards and a run a diff on them you'll see what the assignments are. In both cases M1 which is assigned to 'reset headlock' is not annotated on the diagram.
I see. I'll take another look. If the X52 is truly emulating a mouse (i.e. not to buttons against its own device ID) then I'm not sure how I'll be able to distinguish it from bindings to the real mouse. We'll see.