As I try to upsell customers on additional one-time products, I want the ability to add it to their pending order. If I click on the pending order, scroll to the bottom, and add an additional item to ship--that item does not show in Pirate Ship. (I also have to bill them for that additional item separately in Stripe--which is fine, although another step.) The product to be shipped must be included in Pirate Ship so I can correctly fulfill the order. Alternatively if I create the ad hoc order for the one-time purchase in Subbly, I can change the shipping date but I am unable to add it to the shipment of the pending subscription order. I need to be able to consolidate those two things so that they ship TOGETHER. (Shipping costs are very high and combining the product with their upcoming subscription shipment is one of the ways I can offer discounted pricing--because I don't have to spend as much shipping separately). But I need Subbly to be able to communicate with Pirate Ship that the two items are being shipped together.