Linking to a subreport to get an inventory optional field

I am using SAMINC to test linking a sub report to the picking ticket of an order.  My problem is that the OEORDD table uses the full part number, but the IVITEMO drops the special characters.  When I attempt to link I get no matches.  How can I link the item from OEORDD to the IVITEMO when the item numbers look differently?