I work for a union at my university and when we went to single pay spine, much like the agenda for change scale, their was what is called a 'no detriment' clause. This means that when a person is transferred onto the pay spine, they can only stay the same or go up. I would be REALLY surprised if no such clause was negotiated by your union! Anybody who lost 3200 pounds needs to contact their union rep ASAP and check this out to see how much this is based on FACT. IF it is the case, then you really need to harass your union for failing to represent and protect members interests. My partner is a physio and I know they had a no detriment clause.....