Melodyne problem with bundle / bun / cwb?

I have a project where some of the audio clip or clips became corrupt. The audio engine would stop at that point. I was unable to bounce it, and couldn't finish the project as is. Tried everything.
 
Then I exported it as a bun file under a new name (retaining the old file as a backup), and then opened the bun file. When I played it there were odd sounds at some points.  I pinpointed this to about 6 short clips which I had tuned with Melodyne, and had bounced these to clips so they were no longer Melodyne clips (I thought).  All 6 of these clips were bad in the new project ... some had 'become' other audio clips from the project, and some were just flat-line silent.
 
Outside of Melodyne, I also had similar problems with a few loops I had imported into the project (these are percussion loops I made over the years and have used many times in other projects)
 
Luckily I had kept the corrupt project (where most of the audio was still good). I was able to replace the bad clips by copying from the old project.  So I'm back in business again.
 
My question is - can Melodyne'd clips be exported to bun and back again?  I'm a bit concerned about using Melodyne in the future.

Thank you Craig!  
 
I did bounce the Melodyne clips before saving to the bun. 
 
I do use per-project audio files.  I rarely use bun files. Just did this time as a last-ditch effort to repair a project with some corrupted audio that wouldn't bounce down ... and thankfully the bun maneuver did save the project.

Sorry about that, thanks Noel. I tried to find the reference about some kind of restriction with BUN files, but couldn't.