Hello, @Anonymous.

Let me help figure out why your A/R Aging Detail report is still showing some offsetting entries. 

Generally, these entries should no longer show on the A/R Aging after receiving the payment.

If you run the report prior to the date it was linked, then it will still show on the A/R Aging since these transactions were still open before receiving the payment.

This will be same as the journal entry created, after receiving the payment to get them to apply to each other, you'll need to run an aging report on the date it was linked to clear these entries on your aging report.

Let me know if you have additional questions about your A/R Aging report. I'll be here to help however I can.