Why would ISIS return a different name for a student than the class roster shows?

If a student works at UCLA, and their payroll record shows a different firstname, middlename, etc. and the employee status for this record is Not Separated, (meaning status including Active, Inactive, Leave With Pay, Leave Without Pay except Separated,) ISIS prioritizes data in payroll record from QDB over student record from SRDB. The solution is to update the payroll record through the department personnel who is responsible for payroll data input. Once data is changed in the payroll record, ISIS will return desired name information starting from 6:30 am the next day.