Find what works best for you.
Some folks use Piano Roll View
Some folks use Step Sequencer
Some folks edit event data
Some folks don't know they just played jazz and should edit but don't
I usually either just record the clip over or sometimes do it in Step Sequencer if a really challenging part.
I keep posting here that I will get around to getting good at using the Piano Roll View, and I DO believe that this would WELL worth you learning, as I am quite sure it would become your fastest method of editing midi data. I am not currently any kind of anybody on it, but it is just because I haven't put in enough effort to get good. Nonetheless, this is the method I will recommend you look into using.
Bob Bone