xProfessor, by default when you attach a domain only the new URL/domain is opened for indexing by search engines. If you'd like both domains to be available for indexing open Control Panel > Common Settings, scroll down, and check the option Allow site indexing (by search engines) for both domains.
Hope this helps!
Developer, Designer, Communicator. Been here for 6 years and counting. Visit me at alexmoloney.me.