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We self-host our public website, but over time have also added  subdomains onto it that are not public and are for internal or even client portals.  I am seeking advice as to whether those subdomains affect the analytics data (self referrals, visits, bounces) of the public site that I am tasked with analyzing.  I feel that it does skew the data but need to build a solid case to move the public website to a new domain, so as to leave the existing one in tact with all of its subs.