Hi All. Speaking of Op-Ups I was wondering if anyone had any idea as to how this works....I was on a flight HKG-LHR on CX J. The flight status was

F4, J0 CO DO IO Y9 H9 etc.

I was quiet surprised to not see my self op-up as a CXDM, I would have thought a flight looking like that was a 95% sure chance.

Has anyone out there understood a basic formula that helps me choose which could be good candiates for "the right flight" ?