The original flight was
BA125: LHR-BAH-DOH
BA124: DOH-BAH-LHR
Straight after the 'troubles' it went to:
BA125: LHR-DOH
BA1124: DOH-BAH-LHR
Everyone for BAH had to deplane at DOH and 'transfer' in the terminal
It's now going to
BA125: LHR-BAH-DOH
BA1124: DOH-LHR