@Yvette: Are you using Catch Evolution Free Version? Catch Evolution Pro version is just features addition to Catch Evolution and all your settings will be auto migrated to the upgrade. You can simply purchase the theme and install it. See the theme instruction at http://catchthemes.com/theme-instructions/catch-evolution-pro/
I hope you haven’t change any core theme files such as style.css, functions.php, index.php and so on. As core theme files will be reverted back to original when you update or upgrade the theme. But all the settings made from Theme Options panel will remain unchanged.
Note: You might need to re-assign custom menu, header image and background if used. We also provide upgrade installation for free if you have any confusion. For this you need to purchase the theme and request the installation with your order id from http://catchthemes.com/contact-us
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