Ability to Mass print all Open Invoices in PDF format

Problem Statement: During a fulfillment run, a client with an open invoice receives a hard copy of the invoice with their shipment. Currently, there is no option to mass print all open invoices to ship with the fulfillment; each one has to be done manually and separately.

Suggestion: A button to print all open invoices in 1 PDF to be sent to the print house with the fulfillment list.