When you switch from STP Phase 1 to STP Phase 2, your pay runs will automatically be converted to the new reporting format. You are not required to edit and/or resubmit the old pay runs. The new pay runs which have been submitted will be reported with new reporting format. Related ArticlesHow to edit a published or filed pay run?How to edit a pay run?How to edit allowances in a published pay run?How to edit deductions in a published pay run?How do I add an employee to a pay run?