1. select timezone America/New_York
2. Install/Overwrite without Sample Web Site
3.Take database dump after logging in and entering valid hostname entry 
from admin panel and saving it.(from Tools->Configuration)
4.Remove `sessionid` value entry from `[[dbprefix]]user_attributes` table.(as it is made).
5.Remove entries from manager_log(change auto increment)
6.Remove entries from active_users