You spent months thinking about the move. From WooCommerce to Shopify, or from Magento to Shopify Plus. The decision is made: it's a migration. You hire an agency, sign the contract, and then… it goes wrong. Not a little. Completely.
This isn't a hypothetical story. This is the reality of dozens of store owners we speak to. Entrepreneurs who thought they were in good hands, but woke up in a nightmare of half-migrated data, broken links and a store that looked worse than before.
In this article we share the five biggest mistakes in store migrations — based on real experience from the field. And we show how it should be done.
The most common complaint? "It just wasn't finished." English text still sitting in the theme. Wrong product photos. Buttons leading nowhere. A checkout that didn't work on mobile.
For the agency the project was "technically completed". For the entrepreneur it was a store you were embarrassed about. The difference between a functional migration and a quality migration is huge — and many agencies, unfortunately, only deliver the first.
This is perhaps the most expensive mistake you can make. Redirects — the forwarding from your old URLs to your new URLs — are essential for your SEO. Without redirects you lose all your Google rankings in one go.
Yet we see it again and again: agencies that only set up redirects after go-live. Or worse: not at all. The result? Hundreds of 404 pages, angry customers clicking on dead links, and an organic traffic loss of sometimes 60-80%.
According to iO Digital, protecting your SEO equity during a migration is one of the most underrated aspects. Especially when your conversion pages depend on organic traffic.
A store runs on data. Products, variants, colour combinations, customer details, order history — everything has to come along. But in practice a lot goes wrong here.
Product variants that don't transfer correctly. Colour combinations from Excel that get lost. Customer data coming in incomplete. Prices that don't match. It sounds like details, but for a store with thousands of products this is a disaster.
Research from WebToffee shows that as many as 43% of businesses experience disruptions or data loss during a migration. That's almost half.
| Data type | Common problem | Impact |
|---|---|---|
| Product variants | Sizes/colours not linked | Customers can't order |
| Customer data | Addresses or history missing | No repeat purchases |
| Redirects | Not set up or set up too late | 60-80% SEO loss |
| Images | Wrong or missing photos | Unprofessional appearance |
| Prices/discounts | Wrong amounts transferred | Lost revenue or margin |
"I'll just do it myself." — A sentence you, as an entrepreneur, should never have to say to your migration partner.
Yet this is the reality in many migrations. The agency delivers a half-finished product and expects the customer to edit CSVs, check data and fix problems themselves. That isn't taking work off your plate — that's just moving the problem.
You hire a specialist to take work off your hands. Not to add more work to it. If, after the migration, you spend more time on your store than before, something has gone fundamentally wrong.
A common choice: have the migration done by party A, and the development by party B. Sounds logical — specialisation, right?
In practice this leads to finger-pointing. When something goes wrong (and something always goes wrong), both parties point at each other. "That isn't our responsibility." "The other party should have done that." Meanwhile you're stuck in the middle as the entrepreneur, with a deadline approaching and a store that doesn't work.
The root of the problem is that many agencies underestimate migrations. They see it as a technical chore: export data, import, done. But a migration is so much more than that.
A successful migration requires:
Many agencies claim Shopify experience, but in reality have completed few real migration cases. A Select Partner badge says something about the relationship with Shopify, but not necessarily about migration expertise.
And then there's the emotional side. Entrepreneurs who spend months in a failed migration get worn out. The stress, the feeling of helplessness, the idea you're paying expensive tuition — it's real and it's not talked about enough.
A migration doesn't have to be a nightmare. In fact: with the right approach it's a streamlined process that can be completed within days — not months.
At Syncer we work with Live Sync® technology. That means:
The difference? One party that takes full responsibility. From data analysis to go-live. From redirects to aftercare. If it doesn't work, that's our problem — not yours.
About to choose a migration partner? Then ask these questions:
| ✅ Question | Why it matters |
|---|---|
| How many migrations have you done? | Experience = lower risk |
| Do you work automated or manually? | Automation = fewer errors |
| Who's responsible if it goes wrong? | One contact = no finger-pointing |
| How are redirects handled? | Automatic = SEO protection |
| What if data is wrong after go-live? | Safety net = peace of mind |
| Can I speak with references? | Proof of results |
| Do you do migration and development? | All under one roof = lower risk |
A platform migration is one of the most important decisions you make as a store owner. It determines how your business performs in the coming years. That deserves a partner who takes it seriously.
No half-finished deliveries. No finger-pointing. No "do it yourself". But an automated, proven process with a safety net for when it's needed.
Facing a migration and want to get it right the first time? Request a free migration plan and discover how Syncer handles your move to Shopify safely, fast and end-to-end.
