I use Melodyne Editor (ME) in 3 main ways.
They all start this way: Add ME to the FX bin of the audio track. Click the transfer/capture button in ME and hit playback in Sonar.
1. let it run to the end of the audio. I capture the entire track. ...then use the automatic pitch and drift to let ME do it automatically.... not the best way to do it.
2. let it run to the end of the audio. Now use the manual controls working through the song one phrase at a time.... once you get the hand of this it does not take log to do a track.
3. If you hear something not right in one place.... place the time line marker in Sonar just before the event that needs fixing.... set capture and play through it and stop it. Since it a very small section, the calculation and display is very quick. Make correction manually.
I will also highlight the track or clip and do a "process audio> apply effect" to ME. It's "destructive" but I didn't want the old version out of tune so I don't bother to keep it.
My latest song in the songs forum ( Footsteps in the hall) had ME run on the lead vocal using both 2 & 3 above with "process audio> apply effect" used on both.
If you are looking a clean artifact free correction ME is the one to use. I only use the features I need.... I know that ME can do so much more than I use it for. I also used it to fix fiddle and mando track on the same song. In poly mode I used it to remove a note from a chord to change the chord color.
Handy tool.
Oh yeah.... some advice. Take it one step at a time and SAVE YOUR PROJECT after every major step. After the capture, before you begin the edit.... let it calculate and finish... then SAVE..... after editing the verse.... pause and SAVE..... and move through the song in that manner....SAVE often.
It doesn't crash or glitch very often but it will do it every now and then (on my system...which is a pretty rock solid system).... and ME is the only plug that does this. So when pitch correcting, I simply save often. It actually did glitch on the song mentioned..... I thought I lost the project, but I had saved it and simply reloaded it from the cakewalk directory.... it did not show in the "quick load" list. I lost 10 minutes of work..... not a big deal....and it may not do that with you.... but SAVING on a regular basis is just good practice regardless.