I have the same question. We currently have 1.3.2 and I can’t seem to find anywhere on this site to tell how to upgrade. I would like to keep all of our data and not break our layouts.
The folder the plugin currently resides in is events-calendar-premium and the new new (2.x) plugin is events-calendar-pro. Do I:
1.) Replace the contents of events-calendar-premium with the contents of events-calendar-pro?
2.) Install the new plugin alongside the old one? If so, how do we migrate the data?