Multisite Domain Mapping - Sites being redirected to Primary Site

We just transferred our Multisite to a live environment and mapped the domains that will be pointing to the various sites.

We are having a strange issue where the pages on these sites are all being directed back to the homepage of the Primary Site.

Our various sites in this install are:
http://neurobusinessgroup.com/ (Primary)
http://nbgselfhelp.com/
http://drsrinipillay.com/
http://nbgstore.com/

So if we click on a link from http://nbgstore.com/, it directs us to http://neurobusinessgroup.com/ instead of the page we are trying to access. I havn't been able to figure this one out after spending a few hours trying. Any assistance here?

P.s. I granted access to the site through the WPMU dashboard.