When the licence is re-issued (every 5 years), the authority can only include valid ratings.
The UK CAA re-issues a licence on the basis of a valid medical certificate and any class or type rating that has been valid in the last 5 years! As they have no computer programs to tell them which ratings are valid, they would have a huge increase in workload.
Historically, under UK Law, the UK CAA had no right to remove any rating that had been previously awarded hence FIs retained their old AFI rating indefinitely. They have interpreted the rules as meaning they cannot remove anything that has not expired by more than 5 years. As it has no legal status yet they can do as they like!