Booking, hopefully, Q suites flights out of IAD in March 2024. It seems that they are swapping from the currently A350K to one flight with A350-900 and the other daily flight with 777-300ER. The A350-900 flight is showing without Q suites and the 777-300ER flight is showing with Q suites. I would hope that given the Q suite consistency over the last year in IAD, that if I book Q suites on the 777-300ER flight, I should likely be safe to not get a downgrade right? I would imagine the A350-900 flight might upgrade to a A350K down the line but I imagine I probably shouldn't take that chance?