I had a recent experience with American changing my December TYS-PHL-FCO flight rerouting me through London. When I called the airline to change my ticket to the original itinerary (was showing on their site), I was assured the flight was confirmed and it was a “computer glitch” that changed my flight. The next day my PHL-FCO leg was cancelled. I requested a refund. As much as I wanted to visit Rome, I found this to be a sign that maybe I should wait a little longer before I travel.
This article makes sense regarding my flight because the airline showed the aircraft being a 787. With American receiving far fewer than anticipated, it could be longer than the projected Mar return (IMO). It’ll be interesting to see what happens over the next couple of months.