Originally Posted by
StayingHomeIsBetter
(Which is how I am interpreting the gracious new policy allowing D1 UGs... the likelihood that D1 was not selling out on some routes and DL realized that they were leaving ham sandwiches in their back pocket by not freeing up more coach seats via UGs.)
Unless DL has stopped giving Op-Ups, then there was never such thing as a coach seat left unsold due to empty seats in J.