Just purchased and downloaded the upgrade Finale v25 for my iMac (OS X Yosemite). However, I have not installed the upgrade yet because I have older versions of Finale 2011, Finale 2014 and Finale 2014.5 installed on my hard drive. Prior to installing v25 should I remove the older versions? If so which version should I uninstall? And how do I do I uninstall them?  I'm sorry I am not computer savvy. But I have been a faithful user of Finale since version 2.0. And right now I just do not want to loose any of my music files by doing something wrong. PLEASE HELP.

Thank you, Marlene