I don't understand any of this, as the last definitions we had for UP2A and UP2B were:
UP2A = DL RESERVE DM / DM PASSENGER BOOKED DESIRING TO USE A SYSTEMWIDE UPGRADE TO FIRST OR BUSINESS CABIN.
UP2B = DL RESERVE PM / PM PASSENGER BOOKED DESIRING TO USE A SYSTEMWIDE UPGRADE TO FIRST OR BUSINESS CABIN.
So the DM should have been coded as UP2A.
David