You can only make cash management entries back 12 months prior to the current CM month.  You typically would take the reconciliation report in CM and trace everything to the Trial Balance report or the Account detail report for the cash account.  If you are only keeping 24 months history you may not be able to run the gl reports back that far.

If the GL cash balance on the reconciliation is incorrect you can enter a journal entry but only if it is within the last 24 months from the current GL month.

We would like to make a Journal entry to balance the amount so that we can close the fiscal year which ended in June.  Until June is closed I cannot process any bills into the system because it won't let me go into August.  I read the I could do a manual entry as long as the "allow journal entries to cash accounts without adjusting the bank register" is engaged.  How do I do this in Business Works 2012?  We tried several different accounts but only had to void the transactions because they did not correct the GL

If you just need to adjust the general ledger cash account you would do a journal entry to that cash account in general ledger.  Look in cash management, Accounts, Maintain cash accounts.  Find the cash account you are reconciling and it will have the GL account number. Post your journal entry to that GL account number.  (Debit that account number to increase the balance or Credit that account number to decrease the balance.)

So if the G/L says it is a negative amount I should do a journal entry to credit the amount but in the J/E it needs another account that is to be debited doesn't it?

So if the G/L says it is a negative amount I should do a journal entry to credit the amount but in the J/E it needs another account that is to be debited doesn't it?