In John Mueller’s Google Search Central Office Hours hangout on 09/03/2021, one webmaster was concerned about the approach of moving articles for a site migration.
They were wondering if there is a difference between moving all articles at once or moving articles in different stages (where stage one is 50 articles, stage two could be the next 50, and so on).
John explained that both approaches would be valid approaches and that there is no difference between either approach.
However, he does make the point that he thinks it makes the most sense to move all articles at once if you can.
It does get challenging with a website merger, where the all-at-once advice doesn’t really apply. Doing things incrementally during a site merge is the more recommended approach, whereas when you’re doing a migration, doing things all at once is preferred.
This conversation occurs at approximately the 3:15 mark in the video.