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Map redirects one to one before a migration

Map redirects one to one before a migration

VerdictMoves the needle (as defense)

CategoryCrawling

Last reviewedNovember 7, 2026

The problem

Migrations and redesigns lose traffic.

Steps

  1. Export every URL with traffic or links before the change.
  2. Map each one to its exact equivalent on the new site.
  3. Test the redirects before launch and monitor 404s afterwards.

Evidence

Lost URLs and redirects to the homepage are among the most common causes of traffic drops after a migration.

Verdict

Moves the needle as defense. It is not a growth play, it prevents losses.

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Dan Keller Avatar
Dan Keller
Dan Keller writes repoSEO and its sister site AEOplays, which reviews AEO plays the same way. Before that he edited King Digest, a newsletter on search, marketing and AI, until he got tired of passing on tactics nobody had checked. He reviews each SEO play against what Google documents and what holds up in practice, and says so when the evidence isn’t there yet.