Changing an item's history can affect some reports
MYOB Accounting Plus uses the figures displayed in the History view of the Item Information window on some reports. If you change an item's history in this window, keep in mind that the change you make may not accurately reflect your actual totals. Use care when making changes to the amounts displayed in this window. If you make a change to an item's historical information and then want to use a previous amount, MYOB Accounting Plus cannot automatically reconstruct the monthly totals.
For step-by-step procedures for changing an item's historical information, see To enter historical information about an item.