When are the payment receivables shown in ageing report?

Suggestions:
Receivable which are over due and out standing are shown in ageing and out standing reports. Ageing details, shows all the receivable which have crossed the due date and if the transactions are fully adjusted then they are not showing in the ageing report. Even the Advance amount is also reflected in ageing report. System has details, summary, Sitewise, Base currency and Sales person wise ourstanding and ageing report.