Allow Mintsoft to display “Total Before Discount” on commercial invoices when Shopify orders have a 100% discount.

Currently, when a Shopify order is created with a 100% discount (such as a resend due to damage), Mintsoft receives a value of £0 from Shopify and displays this as the customs value on the commercial invoice. This results in customs clearance failures, as parcels are rejected for having no declared value.

One of our clients has had this happen multiple times. Because the commercial invoice showed a £0 value, the parcel failed customs. As Mintsoft doesn’t currently support “free of charge” orders, there’s no workaround without manually adjusting the product value, which is time-consuming and error-prone.

This is particularly problematic for B2C brands that issue replacements frequently. The Shopify order has the correct "Total Before Discount," but Mintsoft doesn't currently extract or display this for customs.