Helloi have a working joomla site that i have upgraded but the new site is a completely new install with k2, everything is working well in the new site but now i want to import the contacts from the old site into the new site, i know import tool that comes along with k2 but can't use because the new site a complete new install, so i tried copying the user's table that comes with joomla and replaced the one in the new site database. this actually populates all the current user inside the k2 but they don't exist in the user manager. so all these user's can't log on to the site. Does any one know  how to fix this problem.