Here's the scenario:
 
1) Recorded guitar by using two mics to two separate tracks(track 1 and track 2) with attention to correct phasing.
2) Blended levels of track 1 and 2 to taste and listened back to both tracks together to verify there is no phasing issues (sounds great)
3) Using shift key to keep track timing in sync, dragged track 1 to track 2 and blended old with new thereby creating one composite guitar track...track 3
4) Listen to track 3 and it sounds great...NO phasing issues.
5) Created Region Fx on track 3 and select Melodyne.
6) Play track 3 and it still sounds great.
7) Use Melodyne to correct minor timing issues on track 3.
8) Listen to track 3 after the Melodyne timing correction and ... WOW! track 3 now has a terrible phase issue.
 
What do you think?

Without seeing what you are looking at, I am assuming that the "phasing" issue is actually gaps between the blobs created when you corrected the timing on track 3. Visually, is Melodyne putting "dead space" between the blobs?

mettelus
Without seeing what you are looking at, I am assuming that the "phasing" issue is actually gaps between the blobs created when you corrected the timing on track 3. Visually, is Melodyne putting "dead space" between the blobs?

I'm not sure I understand the question.  The blobs represent notes ... so there would naturally be "dead space" between the notes...right?

I wouldn't recommend Melodyne for this type of correction though it can be done. Because melodyne stretches audio you would need to make the same stretch to both clips down to the sample. 
 
I would try either:
- Bouncing the clips together and time adjusting the summed file.
- Create a clip selection group between the clips. Selecting them and making a split and then nudging the audio for better timing

Yeah, indeed. Phase is timing. You change the timing of one track and not the other, you change the phase relationships. Even worse, you make the phase relationship change every time you employ a different stretch.

Lance Riley [Cakewalk]
 
I would try either:
- Bouncing the clips together and time adjusting the summed file.

That's exactly what I did...'I left that step out in my scenario above.   After I merged track 1 and 2 to track 3 I bounded track 3 to clip.  I thought that would sum the file?

John T
Yeah, indeed. Phase is timing. You change the timing of one track and not the other, you change the phase relationships. Even worse, you make the phase relationship change every time you employ a different stretch.

No, read my scenario again.  I blended track 1 and 2 creating track 3 BEFORE I made any timing corrections.  I did NOT change the timing of one track and not the other.  I then time corrected track 3.  When I solo track 3 it now has a phase issue.