The Quicksave/Quickload only saves game state temporarily and it is only available during the runtime of the game. If you close the game, then the game state will not available and you can?t load the game state if you start the game again.
Your save/load requirement can be implemented using ?Save/Load to disk?. If you use that you will be able to load a previously saved game state even after closing and restarting a game.
About the ?file? parameter in ?Save/Load to disk?:
You can give any file name. For example you can just give a file name such as ?savefile?.
If you give a file name without a file path (e.g.: savefile) then the save file will be saved in the same directory where you have your .cap file.
Also you can give a file name with a relative file path.
E.g.: savedir\savefile, will save the game in a directory called ?savedir? which is created in the same directory where you have your .cap file (you have to manually create a directory called "savedir" there).
Or you can give an absolute file path.
E.g.: C:\savedir\savefile will save the game in a directory called ?C:\savedir\savefile?).
When you specify a relative or absolute directory path, always make sure that the given directory is available.