If the incorrect end date is selected but all the transactions are reconciled correctly, the end date can be edited to correct the issue.
Reconcile the account again:
1. In Banks, click Reconcile this account. 2. Enter the correct Ending date. 3. Enter the same Ending Balance as the Beginning Balance (this is because the statement did not change, just the date). 4. If other transactions need to be reconciled, mark them. 5. Click on Reconcile Now.