The Bill module has a feature to “Add PO Lines” from the same Vendor in the Bill.
This feature is only available for the Released Purchase Orders which have not been fully Received yet.
Also, only the Service or Non-Inventory PO lines can be imported into the Bill.
So if the PO does not have Non-Inventory or Service Item lines in them then they will not show up in the “Add PO lines” feature in the Bill module.
