Rehires, Transfers, and Reference Personnel Numbers 
Rehires, Transfers, and Reference Personnel Numbers
Purpose
In situations in which you have rehired an employee, transferred an employee, or you have created a reference personnel number, you must select All data (not diffs. only) to process the export document. The third-party payroll service providers will require full information for the employee in order that all of the data processes will be supported and updated properly. Check with your third-party payroll service provider to make sure that all of the data you are sending will be supported in their software systems.
This means that any employees that have been transferred or have a reference personnel number will receive two payroll checks from the third-party payroll service provider. Doing so ensures accuracy of your payroll balance.