GP 2013 Cash Receipt batch not applying payments to invoices

I have followed the steps inArticle ID: 850560 . The integration refuses to apply the payments to the invoices. I have a header which contain the cust ID, check number, invoice number, date and total check amount. In the detail section is the customer ID, check number, invoice number and amount paid per invoice. It will import the payments with no errors but will not apply any of the payment to the invoices. I have the Cash Apply rule set to Use Detail Record Set and Apply Entire Amount Rule set to True and Apply to Amount set to True. I have tried several combinations and nothing has worked.