Booked JFK-LIS through itravel2000 (some of these OTAs all seem to be the same company behind it, or at least the same people) last night ca. 10:15 PM.
Had PNR on DL.com instantly, didn't see any e-ticket numbers.
This morning, around 2-3 A.M. I just happened to check the PNR and it was merged into a new PNR. All flights still there.
This morning, around 7 A.M. the new PNR had all flights canceled except an Air Europa one (MAD-LIS one way). Confirmed per Amadeus and KLM.