The thing is:
file_delete:
This function will delete the specified file from the system. It should be noted that this function will only delete those files that GameMaker: Studio is able to create and parse: ini files, text files and binary files, or those files made to store game created resources like sprites or surfaces. However, it will not delete any other file.
You can't delete a saved ds_map_secure_save. (You can reset it though, by saving over it.)
Some questions still remains:
1-The folder created in the the appdata/local is the name of the project.gmx right?(not the name of the .exe) Is there other way of changing that in the IDE?
2-Do you manage to...wipe/erase all files in the previously created folder if you won't use them anymore, or perhaps leave them there, useless?
3-Do you code a portion to reset a save game file when you update a game?
4-Can someone can give me an exampe of use of : ds_map_secure_save_buffer? Is it only faster than saving the ds_map to a string then save it to a buffer?
5-And about the ds_map_save_secure:
and will be encrypted and stored to a safe location on the target platform.
The safe location is the appdata/local/gamename folder? Why is it..safe here?