To give you some idea of the magnitude of the change read the <a href="http://biz.yahoo.com/prnews/020228/nyth097_1.html" target="_blank">Press Release</a> from Amadeus. These are the highlights:-
* 48,190 terminals and 14,881 printers (ticket and broadcast) were migrated to the Amadeus System
* 2.5 Million PNRs (Passenger Name or booking Records) were migrated from BABS to Amadeus Global Core system.
* 6.5 Million Customer Profiles were migrated from OCD (operational customer database) to the Amadeus Customer Server.
* 13,400 BA staff were trained and set up to use the Amadeus System.
* 51 key systems in British Airways are impacted by the change in systems involving re-organization of interfaces and data streams.
* More than 300 staff from British Airways were involved in managing the migration.
From the lack of queues at LHR and the lack of complaints on Travel Forums, it seems to have gone very smoothly indeed.