There is one area which has not been completed, as I am not sure its possible...
When new visitors visit your site, Visitor Stats 2 checks if they are from a known search engine, and if so, strips out the keywords for easy sorting later on.
In order to do this, I need to run a PHP script on the referrers table... and this could take a very long time. I am working on a way around this, and will be in touch with all existing customers when it's ready.
For now, please keep in mind the date you upgraded, as the new tool will work from then backwards.
It's a good idea to keep vistats_pages2 and vistats_user2 as I will be building a tool to upgrade all of the info soon.