I have a mysql 4.1 DB that I have been using since around ICY v18.104.22.168 and I have upgraded over the top using the update_to_icy.php script on every release.
What exactly does this script do? Does it remove old entries in the tables not used anymore? Or does it clear out the entire DB in which i would lose posts and or users? I just want to get an idea whether I would need to run this script or not. I just don't want any old DB entries hanging around causing problems later.
Thanks for the help