Should I use "Save & load" or "Persist" behavior ?

I want to create a village world, and player can get-in each house/building that require to go another layout.

So if player back to "World" layout, the objects here still same

I thinking about using "Save & load", but I don't have any idea how to clear the data

I see another alternative using "Persist" behavior, still can't figure out how to reset the persist data.

On start of layout > Reset persisted objects -> Not work as expected

Edit: Working if I call "Reset persisted objects" on key down

Is there other better alternative ?