When I was changing a map background any map that shared the same map background share detection. it would overwrite my detection previously made on the other maps beforehand. the inability to make a 'save as' was fatal to my project since i could not save and have earlier state of project. Also there was no warning that rom with same name get overwritten. But that last part is not on you at all. Also most of french translation is still in english. [also please let me know if i just missed something on how some of the program works]