Bank statement reconciliation / balancing issue.

 Problem Description:

User paid & reconcilled the invoice in CM in (OCT-10) month.since he has to void this payment, he unreconcilled transaction in CM & voided the payment.
Further user paid the same invoice in next month & reconcile in next month (NOV-10). So, there exists the unreconciled entry in Bank statement in month of (OCT-10). Also, user got the receipt from bank in the month of (NOV-10) for the amount voided earlier in the month of (OCT-10). This receipt entry is lying in next month (NOV-10). Hence bank statementfor (NOV-10) is not balanced. hence for both the months there exists unbalanced activity due to unreconcilled transactions. we want to know how to balance bank statement & action needs to be taken without affecting transactions.