I had a payment that was returned for NSF and it was sitting out in "Needs Attention". 

After creating another invoice and getting an actual payment on the 2nd invoice, I deleted the original invoice.  I then created a fake expense for my customer and expensed it to "Accounts Receivable"  for the amount and "paid" it with the NSF that was sitting out in Needs Attention.   You would go into NEW>expense to create the expense and then NEW>receive Payment.  The "Needs attention" item is cleared and everything seems correct.  Hope this solution helps.