Melodyne edits just disappeared?

Anybody experience this? Am I missing something? I have been working in a session that had Melodyne data for a while, and one second everything is playing fine, but now, there is no data that I see in the Melodyne editor even though the events are active in the edit window and are showing that Melodyne is the extension. I can even see all of the tracks I edited in Melodyne on the left panel in Melodyne. Am I missing something??

EDIT: Nevermind. I had to switch to a different track version and then back to the track version that had Melodyne on it. I don’t know why that happened seemingly randomly, but if anyone knows why, I’d love to hear it!

EDIT 2: Nevermind again.. This only worked with the bass. Three other tracks that had edits aren’t showing up or playing even though the Melodyne window shows their names, but when the edits happen, it’s muted. Any ideas?

EDIT 3!!! If I make a new version of any of the problem tracks, then go back to the original, THEN Melodyne comes back, but it didn’t keep the original edits. Does anyone know why this happened? Is this a bug?