E-Commerce

Pointing DNS Too Early Is the Migration Mistake That Takes Your Store Down

By Devrex Digital·September 9, 2026·5 min read

There is a specific moment in every migration where an irreversible decision gets made casually. Adding your domain to the new platform's admin is harmless preparation. Pointing the DNS records is not — once propagation begins, your old site goes down and the new one goes live, ready or not. Doing that before testing is one of the most common migration mistakes, and it's entirely avoidable with correct sequencing.

Key Takeaways

  • ✓ Adding a domain to the new platform and pointing DNS are two different actions.
  • ✓ DNS propagation is not instant and not cleanly reversible mid-flight.
  • ✓ Checkout must be tested on the new platform before DNS changes, not after.
  • ✓ Broken checkout on launch day is a revenue emergency, not a bug ticket.

The Two Actions People Conflate

Adding your domain in the new platform's admin panel is configuration — it prepares the platform to serve that domain when asked. Updating your DNS records is the switch itself, telling the internet where to send visitors. The first is safe to do days ahead. The second should be the last action you take, after everything else has been verified.

Why Early DNS Is Hard to Undo

DNS changes propagate gradually across the internet rather than flipping instantly. During that window, some visitors reach the old site and some reach the new one. If you discover a problem and revert, you now have a second propagation period where traffic is split again, and orders may exist on both systems. It's recoverable, but it's a genuinely messy few hours.

The Correct Sequence

Every step below completes before the next begins:

  • — Add the domain to the new platform, without changing DNS
  • — Complete data import and validate products, customers, and orders
  • — Test the full purchase flow on the new platform's temporary URL
  • — Verify redirects are configured for every old URL
  • — Confirm email authentication so password resets deliver
  • — Then, and only then, point DNS

Test Checkout Like a Customer, Not a Developer

Place a real test order end to end — including payment, tax calculation, and shipping rates. Broken checkout on launch day isn't a bug to triage, it's revenue stopping while you diagnose. And test the edge cases that break most often: discount codes, gift cards, international addresses, and any subscription billing.

Timing the Launch Itself

Migrate at least six months ahead of your peak season, or immediately after it ends. Pointing DNS in November with Black Friday approaching means any problem you discover has to be fixed under maximum traffic and maximum revenue pressure — the worst possible conditions for careful work.

Sequencing Migrations Properly — With Devrex Digital

Devrex Digital runs migrations with DNS as the final step after full validation, not a mid-project action. If a replatform is on your roadmap, the sequence matters as much as the technical work — and getting it wrong turns a planned project into an emergency.

FAQs

It varies by record TTL and resolver behaviour, typically hours rather than minutes. During that window traffic splits between old and new sites, which is why reverting mid-propagation is messy.

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