Open Credit Posting Issue

SUGGESTED

Posted a customer payment as an open credit in May, applied a portion to one of their invoices - closed May in A/R to generate the June recurring invoices.  When doing my May bank reconciliation in BusinessWorks, the payment is not showing up.  Nor is it coming up in the bank transactions.  It is showing on the Accounts Receivable Cash Receipts Register.  If the deposit had not been done, would it still allow it to be posted as an open credit and applied?  What happened?  With the month closed, what do I do now?