Magento to Shopify Plus Migration: A Practical Checklist
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Migrating off Magento is not a technical afternoon project. It is a full replatform that touches your data, your SEO, your integrations, and your live revenue at the same time. Skip a step and you find out during your busiest week, not before it.
Teams moving from Magento to Shopify Plus usually underestimate one thing: the platforms think about commerce differently enough that "just move the store" hides a dozen decisions that each carry real risk if made carelessly. This checklist walks through the phases that actually determine whether a Magento to Shopify Plus migration protects your revenue or quietly bleeds it.
Before you start: confirm this is the right move
A migration is expensive and disruptive enough that it deserves a sanity check first. Shopify Plus fits well when Magento's hosting, maintenance burden, or extension complexity has become the actual bottleneck, not a symptom of something narrower. If your pain is one slow integration or an outdated theme, a smaller fix inside Magento may cost far less than a full migration. Confirm the platform itself is the constraint before committing months to moving off it.
Phase 1: Audit and plan
- catalog inventory. Count products, variants, custom attributes, and any data Magento stores that Shopify does not support natively;
- customer data. Accounts, order history, saved addresses, and any loyalty or store-credit balances that need to migrate intact;
- integrations. ERP, PIM, tax, fulfillment, and marketing tools connected to Magento today, each of which needs a Shopify-side equivalent or a rebuild;
- custom functionality. Magento extensions and custom code doing something Shopify Plus does not do out of the box, which becomes custom app or Shopify Functions work;
- URL structure. A full map of every indexed URL, because this becomes the backbone of your redirect plan later.
Skipping the audit is the single most common reason migrations run over budget. Undiscovered complexity found in week eight costs far more than the same complexity found in week one.
Phase 2: Data migration and mapping
Magento and Shopify structure data differently enough that a naive export-and-import loses information. Plan explicitly for:
- product data mapping, translating Magento's attribute sets and configurable products into Shopify's variant model, which often requires real decisions, not just a field-to-field copy;
- customer and order history, migrated with account continuity so returning customers do not have to re-register;
- metafields for custom data, since anything Magento stored in a custom attribute needs a Shopify metafield to hold it;
- a full data validation pass after migration, checking sample orders, customers, and products against the source system before anyone treats the migration as done.
Phase 3: SEO and redirects
This is where migrations quietly lose the most long-term value. A faster, prettier store that drops organic traffic did not succeed.
- map every old URL to its new equivalent, product by product, category by category, not just at the domain level;
- set up 301 redirects for every mapped URL before cutover, not after traffic starts failing;
- preserve metadata, titles, descriptions, and structured data, so rankings are not fighting a second battle on top of the platform change;
- submit the new sitemap and monitor indexing closely in the weeks after launch;
- watch for orphaned pages, content that existed on Magento with real backlinks and no clear new home.
Phase 4: B2B and custom features
If Magento was carrying B2B functionality, wholesale pricing, or custom checkout logic, this phase decides whether Shopify Plus can absorb it natively or needs custom work.
- map wholesale and tiered pricing to Shopify Plus's native B2B features, which cover most common cases directly;
- rebuild custom checkout logic using Shopify Functions and checkout extensibility where standard configuration falls short;
- plan for multi-storefront needs, brands, regions, or B2B versus B2C, using Shopify Plus's organization structure;
- test payment and tax logic thoroughly, since these are the parts of checkout customers notice immediately if something is wrong.
Phase 5: Testing and parallel running
Before any real customer sees the new store, run it hard against real conditions.
- load test the new store under expected and peak traffic, not just idle browsing;
- test the full purchase flow across every payment method, shipping option, and currency you support;
- run old and new in parallel where feasible, validating orders and data against each other before full cutover;
- QA on real devices, not only desktop Chrome, since mobile checkout behavior is where most conversion problems hide.
Phase 6: Cutover
The cutover itself is a small window with a large blast radius if it goes wrong.
- schedule it away from peak season, never during your highest-revenue window;
- freeze catalog and pricing changes on the old platform in the hours before cutover, so nothing is lost in the gap;
- cut over DNS and redirects together, so no window exists where old URLs 404 instead of redirecting;
- keep the old platform accessible internally for a defined period, in case data needs to be double-checked after launch;
- have a rollback plan written down before cutover starts, not improvised if something breaks.
Phase 7: Post-launch monitoring
- monitor conversion rate and checkout completion daily for the first two weeks, watching for anything the pre-launch testing missed;
- track organic traffic and rankings weekly for the first two months, since SEO impact often shows up gradually, not immediately;
- keep support and operations teams on alert for the first billing cycle, when data or integration issues are most likely to surface;
- run a post-migration audit at 30 days, comparing key metrics against the pre-migration baseline.
Common mistakes to avoid
- Skipping the audit and discovering complexity mid-project. The most common cause of budget overruns.
- Treating redirects as an afterthought. Rankings and referral traffic quietly erode for months.
- Migrating during peak season. Any rough edge becomes a revenue event instead of a manageable bug.
- No rollback plan. A bad cutover with no way back turns a fixable problem into an outage.
Conclusions
A Magento to Shopify Plus migration succeeds or fails long before cutover day, in the audit, the data mapping, and the SEO plan. Treat it as a full replatform project with real phases, not a weekend data export, and protect the store's history: its rankings, its customer data, and its revenue, through every step. Done in the right order, the migration removes Magento's constraints without costing you the traffic and trust the old store already earned.