Paid customer and job remain on AR Aging Detail reports (not crystal)

Our AR Aging Detail by Job is showing a job that has no balance, and our AR Aging Detail by Customer is showing that customer with no balance.  There's nothing that I can find to adjust on this customer.  I found some forum posts on receipts and invoices that don't clear off of these aging reports, but the situations were different enough that I hesitated to try the suggested solutions as these are transactions from prior years.