Balance Sheet Closing Journals: how to adjust previous year afterwards

Balance Sheet Closing Journals: If we close the B/S, and reverse the closing journal on the next period, is it still possible to perform an adjustement to the previous year? In the user guide, it says "Should you need to make adjustments for your ledger after their balance sheet closing journals are posted, reverse and post the original closing entries, make your adjustments, then rerun the closing process to capture the new adjustments for that ledger "; however, this is not possible as the journal has already been reversed. How to do it? What is the best practice? Thanks