A Shopify migration is never finished when the data transfer ends; it is finished when every critical system has been tested, verified, and signed off by the relevant stakeholders. Most teams declare victory too early — and find out weeks later that 301 redirects broke, product metafields didn't carry over, or their email flows are firing at the wrong customers. This operational oversight can lead to significant revenue loss, a plummet in organic search visibility, and a degraded customer experience that frustrates loyal shoppers.

This post-migration checklist covers the 30 things you need to verify before you close the project, brief the team, or announce the relaunch to your customer base. It's organized into six functional areas so your ecommerce team, developer, and marketing lead can each work their own section simultaneously, ensuring a multi-faceted approach to quality assurance.

Use it as a standalone QA pass or hand it off as the final gate before go-live, ensuring that no stone is left unturned in your transition to the Shopify ecosystem.

The Project Supply 30-Point Shopify Migration Verification Framework

This framework is organized into six functional categories: Data Integrity, SEO & Redirects, Storefront & UX, Payments & Checkout, Apps & Integrations, and Analytics & Tracking. Each category should be signed off by a named owner before the migration is declared complete to ensure accountability across all technical and marketing workstreams. Establishing this level of operational rigor prevents the common "blame game" that occurs when performance issues surface post-launch, allowing for a clean, documented handover from the development team to the growth and management teams.

Category 1: Data Integrity

These are the foundational checks that define the technical success of your transition; if your data didn't migrate cleanly, nothing else matters, as your entire business logic relies on accurate records.

1. Product catalog count matches source platform

Pull a total SKU count from your legacy platform and compare it against Shopify to ensure 1:1 parity in your inventory records. Discrepancies here almost always mean missing variants or products that were filtered out during export, which can lead to stockouts or customer confusion if products simply vanish from the frontend.

2. Product descriptions, metafields, and tags transferred correctly

Spot-check 10–20% of your catalog — especially high-revenue or high-traffic products — to ensure all descriptive attributes migrated into the correct data fields. Metafields are the most commonly lost data point in platform migrations, often requiring specialized scripts to map correctly between disparate database schemas.

3. Customer records migrated without corruption

Verify that customer records include order history, tags, and segmentation data, as these are vital for maintaining your relationship with your most loyal buyers. Run a count comparison and spot-check email formats for corrupted strings, ensuring that your CRM integration doesn't fail when attempting to read the imported data.

4. Historical order data is accessible and accurate

Historical orders should be importable as a reference record to ensure your customer support team can manage returns and inquiries effectively. Confirm that order numbers, dates, line items, and totals are correct, as these feed into lifetime value calculations and loyalty programs, which must remain continuous across platforms.

5. Inventory levels are accurate per location

If you run multiple warehouses or 3PL locations, confirm that inventory counts reflect the correct location splits — not a single aggregated number that could misrepresent your fulfillment reality. Failure to configure multi-location inventory correctly will lead to routing errors and fulfillment delays, directly impacting your customer service metrics and order turnaround times.

6. Collections and product groupings are intact

Manual collections require manual verification, while automated collections need rule logic confirmed to ensure that incoming inventory is correctly tagged and sorted into the right visual hierarchies. Check that no products are orphaned from their intended collections, which can effectively hide inventory from customers who are searching by category.

Category 2: SEO & Redirects

This is where most post-migration damage happens — and where it's most preventable with careful mapping and crawl validation against your legacy site structure.

7. All legacy URLs have 301 redirects mapped in Shopify

Export every URL from your old sitemap and confirm each one has a corresponding 301 redirect in Shopify to pass your existing domain authority forward. A single high-authority URL dropping to a 404 can meaningfully affect rankings and turn potential organic traffic into a negative user experience that hurts your site’s quality score.

8. URL structure changes are documented and covered

If your URL structure changed during migration (e.g., /product/ became /products/), confirm the full pattern is covered by a regex or bulk redirect tool — not just individual pages. Inconsistent mapping creates "redirect chains" that can slow down page load speeds and confuse search engine crawlers, potentially diluting your hard-earned SEO performance.

9. The XML sitemap reflects only canonical, indexable URLs

Submit the new sitemap to Google Search Console immediately after migration to speed up the re-indexing process of your new store structure. Verify it includes your key product, collection, and blog pages — and excludes paginated, filtered, and thank-you pages that add no value to your organic footprint.

10. Canonical tags are correctly set

Confirm that canonical tags point to the correct preferred URL on product, collection, and blog pages, which prevents duplicate content issues in the eyes of search engines. Shopify's default behavior is generally correct, but customized themes can break this logic by injecting conflicting metadata that tells Google to index the wrong versions of your pages.

11. Meta titles and meta descriptions transferred

These are frequently stripped during migration, leaving your site with bland, autogenerated placeholders that fail to attract clicks from search results. Spot-check high-priority pages and confirm no pages defaulted to Shopify's auto-generated meta copy, as unique titles and descriptions are crucial for maintaining your click-through rate.

12. H1 tags are present and unique across key pages

Verify that product and collection pages each have a single, keyword-relevant H1 that matches your primary SEO target for that specific page. Missing or duplicated H1s are common in theme migrations where the developer may have unintentionally hard-coded titles, which confuses crawlers and harms your page relevance.

13. Internal link structure is functional

Check that internal links in product descriptions, blog posts, and navigation menus point to new URLs — not legacy URLs that now 301 redirect, which forces crawlers to waste time navigating extra hops. Redirected internal links are technically functional but inefficient for crawl budget, so updating them directly improves the internal linking signal to search engines.

Category 3: Storefront & UX

Your store needs to work correctly for real users on real devices before any traffic hits it, as mobile-first indexing makes your mobile site speed and usability a direct factor in your SEO rankings.

14. Mobile experience is fully functional

Test on actual iOS and Android devices, not just browser developer tools, to verify that touch targets, menus, and forms behave predictably under real-world conditions. Check navigation, product image loading, add-to-cart behavior, and checkout flow, as small glitches in these areas can kill your conversion rate during launch week.

15. Site speed benchmarks are acceptable

Run Lighthouse and PageSpeed Insights on your homepage, a collection page, and a product page to ensure you haven't introduced bloat that will frustrate users. If scores dropped significantly from your legacy platform, identify the cause — often related to unoptimized apps or image assets — before launch.

16. All custom functionality was rebuilt or replicated

List every custom feature from your legacy build — calculators, configurators, subscription logic, custom upsell flows — and verify each one works in Shopify's Liquid environment. Custom features often behave differently on Shopify due to API limitations, so rigorous testing is required to ensure parity with the features your customers expect.

17. 404 pages return a useful branded experience

Confirm your 404 page loads correctly, includes navigation options, and doesn't return a blank Shopify default that might cause a confused user to exit. A well-designed 404 page provides clear paths back to home or top categories, turning a potential dead-end into an opportunity for continued browsing.

18. Search functionality returns relevant results

Test site search with your top product names, categories, and common misspellings to ensure the search engine maps terms to the correct SKUs. Shopify's native search has limitations; confirm behavior matches expectations or that a third-party tool is in place to handle synonyms and semantic matches.

19. Customer account portal works end-to-end

Log in as a test customer to verify order history is visible, address management works, and any saved preferences carried over from the legacy system. Account portals are high-friction areas, and ensuring a seamless experience for existing customers is critical for maintaining loyalty and reducing support tickets post-migration.

Category 4: Payments & Checkout

Nothing in the migration carries more financial risk than checkout failures; you must test everything with real transactions to ensure your money is flowing correctly from the customer to your bank.

20. All payment gateways are live and processing

Process a real test transaction through every active payment method — including Shopify Payments, PayPal, buy-now-pay-later providers, and any B2B invoicing flows. Testing only in "sandbox" mode is insufficient; a live end-to-end transaction confirms that the integration handshake between your gateway and Shopify is fully secure and correctly configured.

21. Discount codes and gift cards are functional

Migrate and test your active discount codes, checking against complex rules like "buy one get one" or "minimum spend" logic to ensure they apply accurately. Gift card balances from legacy platforms require a deliberate migration step — confirm balances transferred and are redeemable, as these are essentially pre-paid liabilities that you must honor.

22. Shipping rates and zones are correctly configured

Place test orders from multiple geographic locations, ensuring that your international and domestic shipping logic triggers the correct rates at the checkout screen. Confirm that the correct rates display and that any carrier-calculated rates are pulling live data, not cached legacy rates, to avoid subsidizing shipping costs for the customer.

23. Tax settings match your legal obligations

Verify tax rules by region, especially if you sell across state lines or internationally, to ensure you are compliant with local revenue authorities. Shopify Tax or third-party tax apps need to be configured and tested, not assumed, as incorrect tax calculations can create immense accounting headaches and legal liability.

24. Order confirmation emails are firing correctly

Place a test order and confirm the customer-facing confirmation email sends, includes the correct branding, and links to the correct order status page where they can track their shipment. These emails are the customer's first touchpoint post-purchase, and they must be professional, accurate, and fully functional to prevent unnecessary customer support queries.

Category 5: Apps & Integrations

Third-party apps and integrations are the most likely source of post-migration breakage because they often rely on unique APIs that require re-authentication and re-configuration.

25. Email marketing platform is syncing correctly

Confirm that Klaviyo, Omnisend, or your preferred ESP is receiving new subscribers, firing welcome flows, and syncing customer and order data — including historical data if that migration was part of scope. If this sync breaks, you lose your ability to re-engage customers, directly impacting your repeat purchase revenue and long-term customer retention.

26. Loyalty and rewards program is operational

Test point accrual, redemption, and account display to ensure your most valuable customers see their balances correctly upon logging in. If balances were migrated, verify they match the legacy records, as an incorrect point balance is an immediate trigger for customer frustration and support calls.

27. ERP or inventory management integration is live

If you run a connected ERP, WMS, or inventory tool, confirm the bidirectional sync is active and that a test order moves through the full fulfillment pipeline correctly. An inventory sync failure can lead to overselling out-of-stock items, which is a major reputational and operational disaster for any growing e-commerce brand.

28. Review platform migrated existing reviews

Product reviews are social proof assets — they should migrate with the products to maintain the credibility of your product pages. Confirm star ratings, review counts, and review body text transferred to the new system, as a sudden loss of reviews often causes a drop in conversion rates.

Category 6: Analytics & Tracking

You can't improve what you can't measure, and broken tracking is invisible until you need the data, making it the most dangerous technical failure in any store migration.

29. GA4 and any other analytics platforms are firing correctly

Use Google Tag Assistant or GA4 DebugView to confirm pageview tracking, add-to-cart events, and purchase events are all recording correctly on the new store architecture. Do not trust historical data to tell you this — test it live, as new themes and app configurations can often strip or alter the GTM containers used by your store.

30. Conversion tracking in paid channels is intact

Verify Google Ads, Meta Ads, and any other paid media platforms are receiving purchase events with the correct value parameters, ensuring that your ROAS data remains accurate. Broken conversion tracking will silently degrade your campaign performance and bidding logic, causing your ad platforms to optimize toward the wrong objectives or fail entirely.