I'm booked on the BA daytime fight from EWR to LHR (7.55 in the morning) in August (30th), booked it a while a go, however I now cannot find it on sale anymore, in fact I cannot see any 7.55 flight from EWR after March 30th. It looks like it IS on the summer schedule from their timetable, but I cannot book onto it via google flights/BA website/any other website.

Is this just a timing issue (have flights been removed from sale temporarily), or am I likely to see my flight getting cancelled and moved to JFK/Another time? BA app still shows my booking as confirmed. Do I need to just wait and see.

I was trying to upgrade my flight, but I now cannot, as the flight doesn't exist anymore. Should I bother phoning BA or am I likely to just get told that I can't do anything until it officially gets cancelled?

Any advice?