I've just had a notification from CheckMyTrip, that my BA34 (KUL-LHR) in early January has switched times.

The flight has been moved by just 20 mins, but the email to me indicated that I hadnt been moved onto the flight the next day, and instead was flying almost 24 hours earlier!

Quick call to YouFirst, and everything is back in order, and I'm now flying on 4th opposed to 3rd at 00:05 opposed to 23:45.

MyFlightsApp hasn't notified me yet, but I'd suggest people check their bookings for any changes...I had similar issues with GRU and GIG flights earlier this year.

M