An upcoming flight has noted my AA Advantage account as Loyalty Club. I wish to change to my BAEC account and have contacted the main sales/booking desk, the Advantage club call centre and emailed in a request. However, no one has been able to amend data, all attempts by AA staff have failed. Reasons given included ‘it is only a 7 digit field, BAEC accounts are 8 digit’, ‘this is a known problem, I have escalated it’ and ‘ask BA’. I am staying calm, but this seems odd. Any advice on next steps .