Modified Scheduled Payment Selection Report not producing output as expected

We have a requirement to sort the data only under the section ' Selected Scheduled Payments' by Payee and then by document number and to add subtotals by payee.

We copied the Scheduled Payment Selection Report template and modified it but when the process is run, but the output does not show any data in the section ' Selected Scheduled Payments' where we added the sorting and sub totals.

Below are the steps we did:

1) XML Publisher Administrator

2) Find CODE = APINVSEL

3) Click Duplicate

4) Changed Code & Name

5) Click Apply

6) Download a copy of the original .rtf

7) Modify the file to add sorting and sub totals