Inline Editing Transaction Line Item Report

I have a saved search setup to show me all line items on PO's that have not been received yet.

Theres some date columns set on this list that help me determine when theres a problem.
1.) Transaction Date
2.) Date item is expected to ship from supplier (a transaction column field on the po)
3.) Inbound Tracking Number from Supplier for this item (a transaction column field on the po)
4.) Date expected to arrive at our location (a transaction column field on the po)

The reason we have these 3 fields on a line-item basis is because many of our PO's get shipped partially to us in pieces as the parts become available. So putting a "global" expected arrival date for an entire PO would be misleading, since all of the parts are not arriving on that day, and you dont know which parts are or arent.