How to show Payment Amount by Fiscal Period?

Summary:

I have a requirement to write an OTIB report to show total payments by fiscal period and supplier.

Content (required):

I've created the report using the Payables Payments Disbursements Real Time subject area. When I run the report, I want the result to show total payments made in each fiscal period. I see amounts in my result that are prior to our go-live date, which is unexpected. Based on spot checking, looks like the report is using invoice date vs payment date to classify w/in each fiscal period.

How do I correct this?

Thank you!

Version (include the version you are using, if applicable):