The process of Resurfacing notes is superb for developing ideas, but there is also the risk that old ideas are lost in this editing process.
It may sometimes be good to retain the old notes and show edits through the use of callouts (highlight boxes) where notes already seem developed.
Until a note is developed into a decent 'tree' for the then these edits need not be recorded. Only when we have something to climb should we make the edits clear.