How it works and saves money?
There is no-one to ask when you claim for items. If you claim and you are not entitled than that is fraud. If you don't claim and you are entitled then they save the money. By changing the rules and creating uncertainty about the legality of claims then they save shed loads unless you are willing to risk the fraud charge (or you have hours of time to trawl through the APs etc). Gone are the days of the helpful clerk: "you have not claimed for this... you can't do that" etc.
Bast***s.