1. A system for facilitating the return of international dutiable goods including a good purchased by a customer from a merchant wherein the good is shipped internationally from the merchant to the customer, the system comprising at least one apparatus comprising one or more memories connected to one or more processors configured to: store, in a commercial invoice database, to store a plurality of records each respectively associated with a plurality of commercial invoices, including a first commercial invoice associated with a completed delivery of an international shipment of the good from the merchant to the customer wherein said first commercial invoice is associated with a first package tracking number and a first commercial invoice number, said first commercial invoice indicating the good purchased, a harmonized tariff code associated with the good, and a quantity and value of the good; store, in the commercial invoice database, a second commercial invoice associated with a second package tracking number, wherein the second package tracking number is associated with a return shipment of the good; store, in a package level detail (“PLD”) database, a plurality of records each respectively associated with a plurality of packages, including a first PLD record identified by the first package tracking number and a second PLD record identified by the second package tracking number; store, in the PLD database, an indication in the first PLD record of the first commercial invoice; receive a request, via an interface, for generating the second commercial invoice, said request comprising an identification of the first commercial invoice and identification of the good of the first commercial invoice to be returned; retrieve the first commercial invoice and use the identification of the good on the first commercial invoice to generate the second commercial invoice; store, in the commercial invoice database, the second commercial invoice; store, in the PLD database, the second PLD record; provide the second commercial invoice to the interface along with the second package tracking number; and store, in the PLD database, an association between the second package tracking number and said second commercial invoice.