Does save scene as save all setting changes?

I have a game that I have been saving along many steps of creating, and now I realize after many “save scene as” saves it is not saving the changes as I thought. it saves what game objects you add or delete from the inspector only . when I changed speeds of players or other things like this in the inspector it did not save different it saves over the original

so does anyone know what exactly save scene saves and what it doesn’t?

is there a way to save all changes
thanks

If you save a scene all public variables in scripts set via Inspector are also saved. Did you change them while in play mode? Changes made in play mode are not saved, only those made in the editor mode are saved.