Delta offered free upgrade to Eco comfort when I had my elite+ card in the reservation. However, I missed the window of opportunity, must have been between 48 and 72 hours before the flight when I did not check. The transatlantic is closed for seat reservation (<48hrs) and the delta domestic is fully booked in y+. I deleted the Millemiglia card from the reservation, so that there won't be any problems getting the KL-V-fare miles credited to skymiles (zero earning on millemiglia).