I am going to import all of my users from one of my vB forums, along with the threads from one of the sections, into my new XF board. Should I just do a full import, then delete the threads that are not needed? Or is there a better way? I want to keep the usergroups too. The board has over 2 million posts in total, but just 120,000 in the section I want to import (we are extracting a certain part of the site into a dedicated site) hence I'm wondering if there is a better way (mainly because of deleted content and how that might affect HD or DB performance).