Final Cut Multicam Audio Problem

I'm working on a project in Final Cut Pro using multicam. I did the multicam synchronization when I started the project and everything worked fine. However, when I reopened the project the next day, I noticed that the audio channel of one of my multicam clips was showing red. Although I can hear the sound, I need to see the audio channels to make proper cuts. I tried relinking the files, but it didn't fix the issue. I can't create a new multicam clip because I've made significant progress in the project. Does anyone know a solution?