I've just installed a wordpress network over my previous single site install. I use a primary domain (thestudentlawyer.com) and a second domain (slawyr.co). The second domain is used for local URL shortening in WordTwit and is setup as an add-on domain in cPanel.
After I setup the network, I noticed that all of the Tweets that had a slawyr.co domain just redirected back to thestudentlawyer.com. Usually slawyr.co/123 for example should go to thestudentlawyer.com/some-post but it just redirects to thestudentlawyer.com.
I assume this is something to do with the way domains work in the network but any help would be appreciated.