Is this a audio software issue?

I am working on a project to figure out lip syncing and sound sweetening. I create and working through a project fine. The lip sync detection works pretty good.
I round out my scene, and export it after saving my project. Later I need to tweek the scene and go back to open the project again, and all the audio files come up blank!
Of course now when I re-import the audio files, I have to re do ALL the lipsyncing again.

I have done this two or three times. and the same thing. after the .mov file is exported, and the project re-opened… the audio files are blank.

oops… I’m working with animate 7.6