Ok I figured it out. Super Admin -> Sites -> Edit -> Settings tab. My assumption is that if you are using the plugin to redirect to an actual subdomain you need edit both the "Siteurl" (NOT "Site URL") and "Home" to the domain you wish your visitors to see.
If the plugin is mapping to a completely separate domain, like my first site that is live, you just edit the "Siteurl" to the domain you wish your visitors to see.
The difference between the two threw me off and I just decided to change both on a whim. If someone wants to chime in on whether my reasoning is correct please do so.