Upgrade from version 1.1.4 to 2.x
I've inherited a Vanilla 1.1.4 installation, which has been compromised by a hacker. So I need to upgrade it asap. I can find nothing documenting whether it is possible to upgrade from version 1.1.4 to 2.x. I am of course worried about database compatibility. There's a ton of stuff in the forum, spanning 5 years. Anybody?