Additional reference:
https://ecommerce.shopify.com/c/shopify-apis-and-technology/t/unable-to-change-order-created-from-api-175934
https://ecommerce.shopify.com/c/shopify-apis-and-technology/t/create-order-with-the-api-136553
https://ecommerce.shopify.com/c/shopify-discussion/t/edit-order-date-197052
https://ecommerce.shopify.com/c/shopify-apis-and-technology/t/orders-api-create-date-filter-for-api-created-orders-201333