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Official statement

After a site migration, it's essential to remove the sitemap from the old domain 1-2 months later. Keeping the old site's sitemap creates a conflict as it signals to Google that the old URLs are still valuable, while everything redirects to the new domain.
🎥 Source video

Extracted from a Google Search Central video

💬 EN 📅 20/11/2021 ✂ 21 statements
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📅
Official statement from (4 years ago)
TL;DR

Remove the sitemap from the old domain 1-2 months after migration to avoid indexing conflicts. Keeping the sitemap sends mixed signals to Google. This could slow down the indexing of new URLs.

❓ Frequently Asked Questions

Combien de temps dois-je garder l'ancien sitemap ?
Google recommande de le garder pendant 1-2 mois après une migration.
Pourquoi retirer l'ancien sitemap est-il crucial ?
Cela évite de fausser les signaux envoyés à Google concernant les URLs à indexer et améliore l'efficacité de l'indexation.
Le sitemap du nouveau domaine doit-il contenir toutes les redirections ?
Non, le nouveau sitemap doit contenir les nouvelles URLs, pas les redirections provenant des anciennes URLs.
🏷 Related Topics
Domain Age & History Crawl & Indexing AI & SEO JavaScript & Technical SEO Domain Name Redirects Search Console

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