Yes that is issue if you try using old saves. First thing I tried actually before starting the whole game over. Suggest starting over or waiting for a full save from someone.
I took a look with RPG Maker Editor actually and compared to last release, this isn't just a play-through translation. They even translated the core of the game when looking with Editor (By that I mean, previous release still had Japanese symbols as names of map spots and what not when looking at it in the Editor. This new one doesn't)
That being said, am I missing some RPGM Editor patches

? Cause half of the map pool when trying to open it up are invisible in the editor. As if I just don't have the templates or something. Was tempted to see if it is possible to well add some more side events as some do here to other games.