Is the Receivables Aging Report time sensitive?

Summary:

Is the AR Receivables Aging Report time sensitive and can it only be run at the time of the AR close. Is it supposed to reflect changes to the existing data if run at a later period? Or should the report show the same information even if it is run for the same month end date but at a later date?

Content (required):

After we closed our July AR period on 3rd Aug someone created an adjustment to write off one of the existing invoices. The adjustment date is 3rd August and the accounting for the adjustment is in the Aug GL period as expected. However, the invoice does not now appear in the AR subledger reports run for July.