Narration Track Placement Lost When Opening Project

I have a saved WLMP project from which I published a video with all of the music and narration tracks lined up as I wanted alongside the video tracks. Now every time I open the WLMP project, the narration tracks appear in the correct spots on the timeline for a split second; and then get all out of sync---not where I originally placed them, and randomly in a bit of a different place each time. Does anyone else have this problem? It's really frustrating because if I want to republish my video, the audio timing has to be corrected each time I open the project, and then it bugs out again when I close and reopen the project later. Is there something obvious in the XML that is bugging it out or what not? Please help :-)