Item information can be easily changed in QuickBooks. To do so, display the Item List window and then double-click the item. When you do this, QuickBooks displays the Edit Item window. The Edit Item window resembles the New Item window. The difference is that the Edit Item window is already filled in with the item information. To change some bit of item information, edit the contents of the field with the information that needs to be updated. Click OK to save your changes.