I would like to upgrade from 2.8 to 3.1. This involves changing the PHP version from the current 5.3 to 5.6. The site (http://www.ecocycles.eu/ojs/index.php/Ecocycles/index) is hosted at Godaddy under Windows. I can change the PHP version from 5.3 to 5.6 on a control panel but, if the journal would not function, I cannot change it back. Please advise.