User blog comment:Brandon Rhea/How we're testing the fandom.com domain migration/@comment-35268131-20181103163650

'Why are we moving these 3,200 communities? First and foremost, to keep your traffic safe and to make sure everything is in order for the full migration in 2019. We believe that while traffic will be lower in the short-term as a result of the domain change, Google and other search engines will adjust after a while and traffic will return to normal. We need to test that, though, so we know for sure what the impact will be. In doing so, our SEO team will be able to quickly fix any potential issues and prevent them from impacting traffic long-term in this and future tests.'

I know that it is a metaphor but. But how does that reduce traffic?