The core technical bottleneck when you migrate orders from WooCommerce to Shopify is structural, not procedural. WooCommerce stores transactions inside WordPress's relational database, order records and their metadata live across the wp_posts and wp_postmeta tables, tied to the broader WordPress content model.
Shopify uses a fundamentally different, API-first data model, exposed through its REST and GraphQL Admin APIs, where orders are structured objects rather than rows spread across generic content tables.That structural gap is exactly why Shopify doesn't support direct order import through a standard CSV upload, there's no clean row-to-object mapping to fall back on. It's also why a single WooCommerce order status doesn't translate one-to-one into Shopify.
Shopify actually tracks order state across two separate fields, a financial status (pending, paid, refunded, partially refunded, voided) and a fulfillment status (unfulfilled, partially fulfilled, fulfilled), while WooCommerce collapses this into one status field like "processing" or "on-hold."
Mapping WooCommerce statuses into the correct combination of both Shopify fields is one of the most common places automated migrations silently misfire, since getting it wrong can trigger false fulfillment flags or incorrect payment states in your new store. Billing and shipping address fields need similar attention, hidden line breaks and inconsistent formatting in exported address data are a frequent, unglamorous source of failed API imports at scale.
Because native CSV import doesn't cover this, order migration in practice means choosing between a dedicated migration app (Matrixify and Cart2Cart are the most commonly used for WooCommerce-to-Shopify specifically), a migration service that handles the API mapping for you, or custom engineering work against Shopify's Admin API for stores with non-standard order logic.
Worth confirming early: some automated migration tools require your Shopify store to be on a higher-tier plan to get full API access to order and customer data, check this against your chosen tool before you commit to a migration date, not after.
Order line items also need to resolve cleanly against your new product catalog, this is exactly where order migration and product migration intersect, since a historical order pointing at a SKU that doesn't exist yet in your new Shopify catalog becomes orphaned, unlinked data.