Hey everyone,
so the other day I decided to use some of my saved up miles to upgrade one of my flight legs to J (first time ever on long-haul J)

. The trip is LHR-BKK rtn, and the upgrade is for DOH-LHR. The other day, this flight showed on my itinerary (both on QR website and on checkmytrip). I was even able to change to a window seat.
However, today, this upgraded flight leg is not showing up on the itinerary on either website. Is this normal for upgraded flights, or is something wrong here?