Mmmmmm....I don't it works that way.
From the manual:
While scanning, Tune creates the initial suggested correction curve using a set of default correction values. Speed-15ms, Note Transition-120ms and Ratio-100% are hard coded into the initial correction graph creation but can be easily edited after the scan, even before auditioning the initial correction curve.
This is what I fought with constantly....the scan uses the default values....and then AFTER the scan you can go edit. IOW....I don't think you can scan with "0" and then edit afterwords. At least I know I've tried changing the values of the three options, and when I then go and select a section of audio....I see that the settings for the three options for that section of audio have reverted BACK to the default settings.
It just got too messy doing all that across the whole track...going in and changing that for sections of audio after the scan, and if you erase a scanned section on the Tune timeline, Tune will rescan that audio again and put it back with the same default settings again....DUH!
Man....I got so nuts with one track...I ended up deleting everything and starting over...
...and that's why I ended up with my method of copying the track...then picking out what I wanted to edit, slicing/leaving only those sections on the Tune track....and leaving the rest, that wasn't going to be edited on the original track.
Now....I scan the track with only the sections I need edited....and then AFTER the scan I go in and make tweaks to those default settings.
You can also copy the whole track...scan the whole copy....then as you go through it making edits, anything that isn't touched you slice out of the Tune track instead of leaving it there.
The problem is EVERY TIME you run the track, Tune will rescan anything that wasn't scanned/corrected....which is the main reason I ended up with the duplicate track approach. It lets me work only on what I want to work on. I hate that stupid rescan if I go back and replay the tracks.
Also....when you have any otter processing/edits on the audio, Tune will sometimes glitch on them and you get artifacts....even if you set the damn thing to "0" for that section of audio. So again I remove everything that I don't need to tune, and that way Tune only acts on very specific audio portions on that duplicate track.
I'm sure there are other work-flows that may feel better to people...but after using it awhile I've found this to be the most useful for me.