Hi can anyone advice on how are what the rules are when you migrate from ESA support group to Universal Credit after a large payment for backdated SDP. Our son has been awarded £22500 for backdated SDP and we are wondering if this will be affected when he migrates from ESA to Universal Credit. The gentleman who contacted me said a letter will be coming out that states it will be disregarded for the lifetime of the ESA award as it was an error on DWP side. But will this continue when he migrates and will it cause any issues.