The tutorial on the map it was for a previous version of the map, but I abandoned the idea, too much failure, so there is no need for a tutorial anymore.
You can't go to the places on the map. Normally the map unlocks more activities for Elpidia.
I might create in the future something that allows you to go back to the visited places to have activities or just a walk.
The bug you reported, you are the first person to tell me about it, I will fix it for the next update.
Thank you for reporting it and sorry that it destroyed your save.
Thanks for playing and thanks for your feedback.