but I've never heard of anyone (self included) being downgraded from PE. When PE is oversold, they tend to roll elite members forward to J.
Perhaps never in long-haul, but that did happen in short-haul, even to Silver members. Several times in fact. Once downgraded 24hrs before departure, received cash compensation at airport, and stayed in Y for flight. Once downgraded 48 hours before departure, MPC called to proactively rebook me on another flight with PEY, and at airpot op-up to J.