MilesBuzz! - does anyone know the acronyms "OCCRC RETAIN-PNR MXFL"

I have two PNRs which, after weeks of their completion, are still in the system. On checkmytrip.com they appear with the last (flown) flights, and the above remark: "OCCRC RETAIN-PNR MXFL". I am quite curious. What does this stand for ?

I have two PNRs which, after weeks of their completion, are still in the system. On checkmytrip.com they appear with the last (flown) flights, and the above remark: "OCCRC RETAIN-PNR MXFL". I am quite curious. What does this stand for ?

Were these booked by a travel agent? If so, it is most probably a retention segment put in by the agent for future access purposes. If not booked by a travel agent then I really don't know.

What airline did you fly?