I made struct with a few variables, none of them has the SaveGame property ticked. I then made save the game object with a variable of the struct type, again the SaveGame property is unticked. So none of my variables has a SaveGame property set to true. Yet I can save and load the data using the save game slot nodes.
So what is the purpose of the SaveGame checkbox on every property in a variable, a struct and savegame object given that the data is saved when they are not ticked?