Payroll Uploaded totals

Hie Experts

Can anyone out there help me. I have payroll year to date that were uploaded before Go live. A mistake was made on Pension because it was uploaded as a positive amount instead of negative. So now i am getting wrong total figures for my year end tax report as the system is now saying positive amounts plus negative amounts. How can i correct this as results are now sitting in cluster tables and the month was closed already.

My report is reading a technical wage type that adds Pensions totals from CRT.

Please help