Final one on this and thanks again for your contributions.
The agent that was able to make the change today said that I would see the change in MMB in 10-15 minutes and then I’d get an email once the ticketing team had done the ticket.
I haven’t had any email but if I put the PNR into Finnair the revised return flight is showing.
Am I good or do I need to call BAEC back in the morning to get confirmation it is ticketed?