Hi there, @Ivy2019.

I appreciate you coming back to us for additional support. Allow me to join this thread and clear this up for you.

You have two options on how to input the item's cost:

• First, you can add the duty and shipping charge on the purchase order. When the vendor pays the A shipment, you can just enter the partial amount (which is without the charge). Then, this PO will only be tagged as closed once the payment is complete.
• Second, you can just add and record the duty and shipping charge on their upcoming transaction, B shipment. 

Let me know which option you prefer by adding a comment below, Eva2019. I'm still here to help you more if you have additional questions. Have a good one.