I got big trouble right now, wonder anyone could help :(
What happened is that:
I have a trial site and a original site.
I follow the http://codex.wordpress.org/Moving_WordPress
successfully move (actually copy and paste) the trial into a original site and replace it (the trial site is not erased after the moving finished).
However, when even after I restored the file on the server into stage before the process of moving, I can not access my trial site (which is in a sub domain such as http://www.trialsite.abc.com) any more!!! what happen now is that anytime I input the trial site address it just jump back to the original old site