The Secret Blueprint to Changing Your Domain Name Without Losing a Single Visitor
Open the old domain property and use the Change of Address tool under Settings.
Select your new domain from the drop-down menu and click Validate & Update.
In addition, prepare and submit a new sitemap for your new domain under Indexing → Sitemaps.
Do the same for other webmaster tools you might have connected to your site.
11. Update Google Analytics
The last step is confirming your change in domain in Google Analytics so you can continue tracking your traffic correctly. Log in to your Google Analytics account and go to the Admin panel, and then to Data streams under Data collection and modification.
