So there is a bit more clarity to what is happening due to the retirement of the planes and the schedule changes.
I had a direct flight PHL-DBV for July on a 767-300 (return flight as well).

The flight has been discontinued and the only options are PHL-MAD-DBV. The reservation completely disappeared online. After 2 phone calls, I was told that I would have to select new flights or could cancel the reservation.
I knew something was up when my upgrades (via miles) cleared a few days ago ;-)