How long does a Magento to Shopify Plus migration take in the GTA?

12–18 weeks for a typical mid-market migration in the Greater Toronto Area. Catalog under 5,000 SKUs and fewer than 10 integrations: 12 weeks. Catalog over 25,000 SKUs with B2B, multi-region, or heavy ERP integration: 18+ weeks. We've seen rushed 8-week migrations — they always pay back the time saved in post-launch fires.

Will I lose SEO ranking when I migrate to Shopify Plus?

Not if you do it right. A correctly executed migration loses less than 5% of organic traffic in the first 60 days and recovers in 90 days. The mandatory non-negotiables: a complete URL map with 301 redirects, schema preservation, Core Web Vitals at parity or better, and a content audit so you don't accidentally drop pages that rank.

Can I migrate to Shopify Plus without downtime?

Yes. The cutover itself is a DNS swap that takes minutes. The work is in the parallel run — staging on Shopify Plus is built and validated against your live store for 2–4 weeks before cutover. Inventory, orders, and customer data are synced in a final pass within hours of cutover.

What's the biggest mistake GTA retailers make in Shopify migrations?

Underestimating the integration workstream. Most retailers focus on the front-end (theme, design) and treat ERP, OMS, 3PL, marketing automation, and analytics as 'we'll figure it out.' These integrations are 30–50% of total migration effort. Plan and budget for them on day one.

Should I move to Shopify Plus or stay on Magento 2 in 2026?

If you're on Magento 2 and considering Adobe Commerce Cloud, total cost of ownership in 2026 typically favors Shopify Plus by 30–50% on a 3-year horizon. Magento makes sense for retailers with extreme customization needs or strict on-prem hosting requirements. For most GTA mid-market retailers, Shopify Plus wins.

How do I handle B2B and B2C on Shopify Plus during a migration?

Shopify Plus's native B2B (introduced 2023, matured significantly through 2025) handles price lists, customer-specific catalogs, net terms, and quote-to-cart cleanly. You can run B2B and B2C on the same store with two storefronts, or run two separate Plus stores depending on brand separation needs.

What does a Toronto Shopify Plus migration cost?

$80,000–$180,000 CAD for a typical GTA mid-market migration in 2026. Add 20–30% for B2B or multi-region scope. The cost scales with integration count, not just catalog size. A 1,000-SKU store with 15 integrations costs more than a 10,000-SKU store with 4.

Shopify Plus Migration Guide for GTA Retailers (2026)

Most Shopify Plus migrations don't fail at the technical level. They fail at the timeline level — the project drags 30% past schedule, the SOW gets renegotiated mid-flight, and the launch date moves into Q4 or BFCM and gets postponed by a year. This guide is the migration playbook X9Elysium uses with GTA retailers, structured so the timeline doesn't slip. We've led migrations from Magento 2, WooCommerce, BigCommerce, and Salesforce Commerce Cloud — and the playbook below is what consistently keeps projects on schedule.

TL;DR

A clean Shopify Plus migration from Magento, WooCommerce, or BigCommerce takes 12–18 weeks and costs $80K–$180K CAD in the GTA. The work splits roughly 25% strategy and discovery, 30% theme and frontend, 30% integrations, 15% data migration and content. SEO loss is preventable. Downtime is preventable. Budget overruns are not preventable without a real discovery phase upfront — that's the single biggest predictor of project success.

When migration makes sense (and when it doesn't)

Migrate if:

You're on Magento 2 or earlier and dreading the next major version upgrade.
Your WooCommerce store is hitting performance ceilings — checkout abandonment is climbing or your hosting bill is climbing past $1,000 CAD/month.
You're on BigCommerce and the merchant tooling around payments, B2B, or international is friction-heavy compared to what you've seen on Shopify Plus.
Your team spends more than 20% of its weekly engineering capacity on platform maintenance vs. growth work.
You're scaling past $5M ARR and your platform won't comfortably reach $25M ARR.

Don't migrate if:

You have severe platform-specific customizations (custom product configurators, complex pricing engines) that don't have Shopify equivalents and would cost more to rebuild than the migration saves.
Your team has just gone through a major platform change and can't absorb another transformation in the next 12 months.
You're under 6 months from a peak season and the timeline doesn't allow for proper validation.

The 12–18 week migration timeline

Phase 1: Discovery and architecture (weeks 1–3)

This phase is non-negotiable and where most migrations either succeed or doom themselves. Outputs:

Full inventory audit: every SKU, variant, image, price list, customer group, integration, automation, and content page.
URL map: every URL on the source platform mapped to its Shopify destination, with 301 redirect logic.
Integration architecture: every connected system (ERP, OMS, 3PL, ESP, ad platforms, analytics, fraud) with the migration approach for each.
Data migration plan: customer accounts (with password rehashing — Shopify can't import hashed passwords from arbitrary platforms, so plan a one-time password reset), order history, gift cards, store credit, loyalty points.
Theme decision: off-the-shelf theme (faster, cheaper, less risk) vs. custom theme (better brand control, longer timeline). Most successful GTA migrations ship on a customized premium theme rather than a fully bespoke build.

Phase 2: Build (weeks 4–10)

Parallel workstreams:

Frontend / theme. The theme team builds against staging Shopify Plus while design QA runs in parallel. Plan 4–6 weeks for a customized premium theme, 8–10 weeks for a bespoke theme.

Integrations. Each integration goes through: discovery → API contract → build → unit test → end-to-end test → UAT. ERP and OMS integrations are usually the longest pole. Build them first.

Data migration. Use Matrixify, LitExtension, or Cart2Cart for bulk transfer; build custom scripts for anything platform-specific. Run the migration twice: a dry run at week 7, the real run at cutover.

Content. Audit every blog post, landing page, and resource page. Drop anything that doesn't generate traffic, conversions, or backlinks. Migrate the rest with URL preservation.

Phase 3: UAT and pre-launch (weeks 11–13)

Full end-to-end UAT with real data on staging.
Performance testing: Core Web Vitals must be at parity or better than the source platform.
301 redirect validation: every important URL tested with curl/Screaming Frog.
Tax engine validation: GST, HST, PST, QST all calculating correctly per province.
Payment gateway testing: every payment method, including Shopify Payments, Apple Pay, Google Pay, and any custom gateways.
Final freeze: 7 days before cutover, no more code changes. Bug fixes only.

Phase 4: Cutover and hypercare (weeks 14–16)

Cutover window. Tuesday or Wednesday, 6am ET. Avoid weekends (limited support availability) and Mondays/Fridays.
DNS swap. Lower TTL 24 hours in advance. Cutover itself is minutes.
Final data sync. Inventory and orders sync from source platform within 30 minutes of cutover.
30-day hypercare. Daily standups, 24-hour bug-fix turnaround, weekly metrics review. Most issues surface in the first 14 days.

Phase 5: Optimization (weeks 17–18+)

Address backlog items deferred from launch scope.
Begin CRO program against post-launch baseline.
Plan next-90-day roadmap based on real data.

Avoiding the SEO pitfall

A migration done well loses <5% of organic traffic in the first 60 days and recovers in 90 days. A migration done badly can lose 30%+ traffic permanently. The non-negotiables:

Complete URL map. Every URL on the source platform → its Shopify destination, with 301 redirects in place at cutover. Use Netlify _redirects or Shopify's URL redirect feature, depending on your routing.
Schema preservation. Product, Article, and Organization schema must be present on the new site at cutover. Validate with Google Rich Results Test before launch.
Core Web Vitals at parity. If your new Shopify site is slower than the old one, rankings will drop. Measure LCP, INP, and CLS on both before launch.
Content audit. Don't migrate every old blog post — many were never meant to survive a migration. But do migrate every post that drives organic traffic, ranks for any keyword, or has backlinks.
Submit updated sitemap and request reindexing on Day 1 in Google Search Console and Bing Webmaster Tools.

Integration patterns by platform

From Magento 2

Magento's customer password hashing isn't compatible with Shopify. Plan a one-time password reset email at launch.
Magento's URL keys often don't match Shopify's URL handles. Build the redirect map carefully.
Multi-website / multi-store features usually map cleanly to Shopify Plus expansion stores or Shopify Markets.
Magento's checkout extensibility doesn't transfer; rebuild custom checkout logic using Shopify's checkout extensibility framework.

From WooCommerce

WooCommerce's custom fields and ACF fields need explicit mapping to Shopify metafields.
WP-managed user accounts: similar password issue as Magento. Reset email at launch.
Yoast SEO settings need explicit migration — Shopify's native SEO fields cover most but not all.
WooCommerce subscription plugins typically don't migrate cleanly. Switch to ReCharge, Recharge Pay, or Bold Subscriptions on Shopify.

From BigCommerce

BigCommerce → Shopify is the cleanest of the three. URL structures are similar, customer data exports are reasonable.
BigCommerce's price list functionality maps cleanly to Shopify B2B price lists.
Custom fields generally map to Shopify metafields with a Matrixify or LitExtension transfer.

What this costs in the GTA in 2026

Migration size	GTA price range (CAD)	Typical timeline
Small (under 1,000 SKUs, ≤5 integrations)	$50,000 – $80,000	10–12 weeks
Mid-market (1K–10K SKUs, 6–12 integrations)	$80,000 – $150,000	12–16 weeks
Enterprise (10K+ SKUs or B2B/multi-region)	$150,000 – $300,000+	16–24 weeks

Add 20–30% for B2B scope. Add 25–40% for multi-region (Shopify Markets) scope. Add 15–25% for headless / Hydrogen frontend instead of theme-based.

How X9Elysium scopes a GTA migration

Every X9Elysium migration begins with a paid discovery phase (1–3 weeks, $8K–$20K CAD) that produces:

A complete URL map and 301 redirect specification.
Integration architecture covering ERP, OMS, 3PL, ESP, ad platforms, and analytics.
Data migration plan with two dry runs scheduled before the live cutover.
Theme decision (premium-customized vs. bespoke) with timeline implications.
Risk register with mitigation plans for the 5–10 most material risks.

The discovery deliverable is yours regardless of whether you continue with us into implementation. If you do continue, the discovery feeds a fixed-fee or T&M SOW with no scope ambiguity.

Final word

Shopify Plus migrations done well are quietly profitable: they lower platform cost, improve site performance, free engineering team capacity, and unlock Shopify's apps and ecosystem. Done badly, they're a multi-quarter distraction. The difference is almost entirely upstream — the discovery phase, the integration plan, and the cutover discipline. If you're considering a migration and want X9Elysium to review your scope or timeline, book a strategy call.