I have a suppression formula on the details line in crystal however it is filtering out the items when the order type switches to backorder.  How can I include the backorder order type, is it as simple as removing the last statement in the formula?

formula = {SO_PickingSheetWrk.LotSerialSeqNo} > "00000000000001" or  {SO_PickingSheetWrk.ItemType}="5" or _
{SO_PickingSheetWrk.ItemType}="4" or _
({@IncludeBackOrderQuantityInQuantityOrdered} = "N" and {@IncludeBackOrderedLines} = "N") or _
{SO_PickingSheetWrk.OrderType} <> "S"