Audio imported from Premiere out of sync

My Premiere - to - Audition workflow has been thrown into disarray.

After completing an edit in Premiere I typically export the sequence to Audition.  I then sweeten the audio there and Export back to Premiere.

Recently, though, when I return to work on the Audition Session, to make additional audio tweaks, one or more of the tracks is completely out of sync.  It seems many of the clips (strangely, not all) on that track go back to the beginning of the master file they were pulled from. Nearly every clip plays the same beginning piece of audio.

Has anyone else experienced this? And what might be done?  The only solution I can come up with is to re-export from Premiere and perform the entire sweetening process again.  A LOT of work.