Jan 20
10
When it comes to site moves, if you pick some URLs and not all, it can cause issues for Google. In short, moving all your URLs from one place to another will result in a much faster site migration than taking portions of your site to migrate at a time. But if you leave some URLs on the old domain, that will cause issues and slow the migration down in Google’s systems.
Read more:
Google Says Move Full Domain, Not Pieces, If You Want A Fast Site Migration