Sounds like you made some changes to your current site for the move. If you’ve got the settings set up for the new domain, you’ve got to move the site using your FTP and hosting.
The detection method is not immediate. The best way to tell, if you’ve got it set up for it, is to open the “Real Time” feature in Google Analytics and ping your site. If you pop up on the real time, you know you’re set up.