7 different download files for updating Catch Responsive Pro 4.2.2

Hi. I'm trying to get up the nerve to update my Pro theme. 1. I've made a copy of my customized CSS. Any other safety measures I should take? 2. When I log in to download the updates, I see 7 files named "Catch Responsive Pro (Theme Usage for Lifetime and Update for 1 year". Two say expires = never; 5 say expires = March 2, 2018. Which files do I download? 3. Any other tips on updating the theme? I have a lot of custom settings for the theme and don't want to lose anything! Thank you. Alice (wellnesswarriorsbostondotorg)