OK, well I absolutely checked that the details were updated in Payroll>Employees>Employee Name>Payroll details. BUT the payment for Jun/July AND August were all returned. I don't know what is wrong. In an attempt to just get this guy's super paid, he has joined my Default super REST and I have checked his details are up to date. I waited 24 hours after the details were updated via Employee Self On Boarding and then I reprocess the Jun/July super today and paid it. Now I will wait and see if that gets accepted or returned before I do August. If that doesn't work then I may have to contact REST and ask if I can pay the contribution an alternative way via BPay or something. I know what he entered in the Employee Self On Boarding for REST is correct because added him to my list of employees in REST Employer login and it all works.