Suite Importing from a 3.8.5 vBB into 4.xx
 

I have a vbulletin site that is running 3.8.5. I want to install 4.xx. I have already purchased it. However, here is my problem. vB4.xx is a HUGE upgrade. I am more than a bit nervous on upgrading from 3.8.5. There are many mods on the 3.8.5 system that will not work in 4.xx.

Is there any way I can install 4.xx into a new folder and database and use impex to import the users, usergroups, forums, threads and pms into the new forum? This way i can start all over on the forum without having to strip my forum down to the bare essentials first.