This issue was common at the start of 2000 when the Royal Mail recoded many areas in the UK, frustratingly my postcode was changed. Royal Mail data is updated quarterly, however, off the shelf software with a fixed dataset like Mappoint and will always be slightly out of date with the dynamic way Royal Mail update their postcode data.

It maybe something for the future, but I don't see why Microsoft can't send updated Royal Mail data through a patching system to Mappoint software to keep it updated.

Regards,

Stu.