Printable invoice always shows DUE amount

[Maf. King]

On Mon 14 September 15 22:47:08 Hossain wrote:
> I posted an invoice , then PROCESS  PAYMENT the invoice. Yet after I
> find the same
> invoice for report or Print it shows the amount to be DUE ? Why is it
> DUE even after
> I PROCESS PAYMENT.

Does the customer report (or the receivables ageing report) show that the 
invoice is due or paid?