Something in engine might have been charged when running save as a task while paused. It shouldn’t be affected by that. I have to check that later.
Your charBP should always spawn with the same SGUID value. For a main character I just use an invalidated Guid value (0000-0000-0000-0000). And I do not use on it a Guid generator in constructor.
You can use “Load Game Mode” at any time, but you probably need some extra loading screen setup to load saves after BeginPlay to make sure all default values have already initialized before loading.