Import An Active Shopify Stores Orders & Transactions To A New Shopify Development Store

We need to Import An Active Shopify Stores Orders & Transactions To A New Shopify Development Store ready for a relaunch. Shopifys API can be used to import existing orders and transactions. This is a Shopify guide for migrations: [login to view URL] This specifically outlines how to use the API for this function: [login to view URL] Please include an E.T.A. for your work in your proposal as we would like this done immediately. Thank you.