I am still in the process of building my Shopify store and am about 80% done. I have decided to use Shipstation for my shipping instead of Shopify shipping.
I have a couple of questions:
1) How does Shopify know to pass the order along to Shipstation for both order processing and shipping rates after a guest has made their selections and paid for their order? I want to make sure that their order is shipped via Shipstation.
2) I am only using two shippers as options, how do I know that Shopify is pulling the rates from Shipstation and not from Shopify shipping?