Do's and Don'ts for a Successful E-commerce Migration

An e-commerce platform migration is one of the highest-risk operational changes a webshop can make. Done well, it sets you up for years of growth. Done poorly, it damages SEO rankings, breaks integrations, loses historical data, and disrupts the operational rhythms your team depends on.

After managing migrations from Lightspeed, Magento, WooCommerce, and custom platforms to Shopify and other modern stacks, we’ve seen the same mistakes made repeatedly — and the same preparation habits that set migrations up for success.

Here’s a practical guide to both.

The Do’s

✅ Do: Audit Your Data Before You Start

The single most valuable thing you can do before a migration is understand the state of your existing data. Most legacy systems accumulate years of inconsistencies: duplicate products, missing SKUs, encoding errors, products with attributes in the wrong fields, customer records with bad email formats.

A data audit reveals:

• What you’re actually working with (often different from what you think)
• Which data needs cleaning before migration, not after
• What custom attributes or structures need mapping decisions
• Whether there are products you should archive rather than migrate

Budget a week for this. It will save you weeks of post-migration cleanup.

✅ Do: Run Multiple Test Migrations

A single test migration gives you a snapshot. Multiple tests — each improving on issues found in the last — give you confidence.

A good test migration protocol:

1. First pass: Run the full migration on a staging environment. Don’t look at edge cases yet, just check if it completes
2. Reconciliation: Compare product counts, variant counts, category structures, and a sample of order records against source
3. Fix and repeat: Address failures, mismatches, or mapping issues, then run again
4. Final pre-cutover test: Run a clean test migration 48-72 hours before go-live using fresh data exports

Most migration failures happen because teams run one test, find everything “looks fine,” and go live — only to find edge cases in the real data at the worst possible moment.

✅ Do: Define Data Ownership Explicitly

In a migration involving multiple teams (marketing, operations, logistics, development), unclear data ownership is a common source of problems.

Before starting, document:

• Who owns the product catalog? Who approves the final field mapping?
• Who owns the customer data? Who validates the customer record migration?
• Who owns the order history? What’s the minimum acceptable completeness?
• Who signs off on go-live? What specific criteria need to pass before you flip the switch?

Without this, you’ll get competing opinions mid-migration when you can least afford delays.

✅ Do: Map All Integrations Before You Start

Your platform doesn’t operate alone. It connects to:

• ERP (Exact Online, AFAS, SAP Business One)
• WMS (Picqer, Modexpress, MyParcel)
• Marketing platforms (Klaviyo, Mailchimp)
• Customer service (Zendesk, Freshdesk)
• Analytics (GA4, Looker Studio)
• Marketplaces (Bol.com, Amazon)

Every integration needs to be evaluated: Does it survive the migration automatically? Does it need to be rebuilt? Does the API change? Is there a temporary solution to bridge the cutover period?

Discovering a broken integration after go-live is far more stressful than planning for it upfront.

✅ Do: Plan a Staged Cutover

A cutover isn’t a single moment — it’s a sequence. A staged cutover plan should include:

1. Freeze the source platform: Stop new product updates and order imports in the old system
2. Final data export: Pull fresh data exports for the migration
3. Execute migration: Run the validated migration script on production
4. Reconcile: Verify counts and spot-check records
5. Test critical paths: Place a test order, check inventory sync, verify a customer login
6. DNS switch: Update DNS to point to the new platform
7. Monitor: Watch error rates, integration logs, and customer service queues for the first 48 hours

Build in explicit go/no-go decision points. If something fails at step 4, you should have a plan to roll back.

✅ Do: Preserve SEO-Critical URL Structures

For many e-commerce stores, organic search drives 30-50% of revenue. A migration that changes URL structures without proper redirects can destroy years of accumulated ranking signals.

Before migration:

• Export all indexed URLs (use Google Search Console or a crawler like Screaming Frog)
• Map old URLs to new URLs for all products, categories, and blog content
• Implement 301 redirects before or immediately after go-live
• Submit a new sitemap to Google Search Console

This is one of the most skipped steps and one of the most costly to recover from.

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The Don’ts

❌ Don’t: Launch Without Reconciliation Checks

“The migration completed without errors” is not the same as “the data is correct.”

Always reconcile:

• Total product count (source vs destination)
• Variant count per product (check a sample of complex products)
• Customer record count
• Order record count and totals for a recent period (e.g., last 90 days)
• Category and collection assignments

Automated tools often complete without errors but silently skip records they can’t handle. Reconciliation catches this.

❌ Don’t: Skip Historical Order Data

Historical orders are more than nostalgia. They power:

• Customer service (returns, exchanges, order lookups)
• Reporting (year-over-year comparisons, customer LTV)
• Marketing (repurchase triggers, VIP segmentation in Klaviyo)
• Finance (revenue recognition, tax records)

Migrating without order history — or with incomplete order history — creates operational gaps that surface for years. Even if you keep a read-only archive of your old system, the integration with your new system is lost.

If your migration tool doesn’t support full order history migration, budget for custom development to extract, transform, and import it properly.

❌ Don’t: Underestimate Integration Dependencies

“We’ll fix the integrations after go-live” is one of the most reliable ways to create a crisis.

Integrations with fulfilment, inventory, and finance are often business-critical from day one. A broken ERP integration on launch day means orders can’t be invoiced. A broken WMS integration means fulfilment doesn’t know what to ship.

Map all integrations before the migration. Test each one in the staging environment. Don’t leave any integration in an unknown state before flipping to production.

❌ Don’t: Migrate During Peak Periods

This sounds obvious, but it happens. The pressure to launch the new platform often collides with sales peaks: Black Friday, seasonal campaigns, major promotions.

The cost of a migration problem during a peak period is an order of magnitude higher than the same problem in a quiet week. Issues that would be manageable mid-week become emergencies when you’re processing 10x normal order volume.

Block out a migration window at least 4-6 weeks away from major sales events.

❌ Don’t: Move Data That Shouldn’t Come With You

A migration is a reset opportunity. Not everything in your old system deserves to come along:

• Discontinued products that no longer belong in the active catalog
• Customer records with invalid emails (they’ll hurt your marketing deliverability)
• Orders older than your data retention policy requires
• Legacy categories that no longer match your current structure

Migrating everything by default is the lazy approach. A deliberate archive/migrate decision for each data type results in a cleaner, more manageable new platform.

❌ Don’t: Forget to Communicate Internally (and to Customers)

Your team needs to know:

• When the migration window is and what that means for them
• Which processes will be different immediately after launch
• What to do if they encounter problems
• Who to contact

Customers may need to know if their login credentials change, if there’s any planned downtime, or if their order history is accessible in the new system.

Internal surprises on migration day add unnecessary chaos to an already complex operation.

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Summary

The migrations that go smoothly are never the ones that hoped for the best. They’re the ones that planned for what could go wrong — and built checkpoints to catch it before it became a crisis.

A thorough data audit, staged test migrations, explicit integration planning, and reconciliation checks add time upfront but save weeks of post-launch recovery.

Need help planning your migration? Talk to Duxly. We help e-commerce businesses migrate platforms safely — with clear data mapping, tested integrations, and a go-live plan that doesn’t leave anything to chance.