Drop ship orders - Identifying them in fulfill page

We would like to identify all orders with drop ship purchase orders in them in the 'fulfill orders" page. I have asked Netsuite before and I was told it is not there. However, I can create a saved search for orders with PO (using applying  link type as drop shipment in criteria). The plan is to use the same criteria in mass update and use a custom field or notes to mark those orders as "PO" and then identify them in "Fulfill orders" page. But if the same criteria is used no orders show up in Mass update. Is that