What utter tosh. You get a contract from SAS or CAE for you TR then on succesful completion of your TR you get returned to UK to do your base trg. You then start getting paid by FR to do your line trg as per the line trg contract
Vortex Thing, it looks like you are actually confirming what Aloue said. Did you see your line training contract before you signed a Training Contract? Did you know (were you told, or is it in writing?) what you would earn for, say, the next 3 years before you signed the training? Seems to me you have won the argument if you have this info. If you don't have the info then Aloue and the other posters on the same lines would have got it right.
Indeed, why do you need so many contracts to cover such a short period? Most of us only sign one!!