Can I update from Lightroom 2 right to Lightroom 5 without losing any libraries or presets? Also, I just got a new fully loaded iMac and am wondering if Lightroom 2 can be loaded on it (Mavericks OS) in order to do my update to Lightroom 5. I'm unable to yet find out if Lightroom 2 works in Mavericks OS so that my libraries and presets can be absorbed into Lightroom 5 upon loading. (Yes, this is a long overdue update I've needed!).