Just successfully moved my BMI miles into my BAEC account, as has been said go into BAEC account, manage my account, scroll down to combine my avios, then next page drop down menu put in diamond club, put in account number and then password, x little box at bottom and then press log in and continue, the miles come up on the next page, press combine and all then should be ok, not being a computer wiz kid do not know what browser I am using, but the exercise works all ok for me each time.^