Multi cam and Audio Sync Issue with a Final Cut Pro Multi cam project

Hi Group,

I'm editing a multi cam clip project of a live music show in final cut pro version 10.6.5 (latest version). I edited a rough cut and I'm now going through and fixing up the edits and making changes. I noticed a spot in the timeline where the multi cam clip is NOT showing (the dotted line between cuts) and the audio is now gone off sync. The audio repeats itself for a second or so, like a duplicate clip. In the final version I'm going to be replacing the scratch audio clip with a master file laid in the timeline after the edit is completed. I have provided a photo of the spots in the timeline where there is no longer dotted lines and where the sync issues are (there are two of them), I've attached a photo of the multi cam clip and you can see there are no edited or cut spots on the original video clips after creating the multi cam clip. So this is VERY confusing and VERY frustrating as to why this happened at all. It is no longer reading the mulit cam clip and it is is going to throw the entire 1-hour show off sync one I replace the audio. What in the world happened here? And, Is there a way to fix this, or a some kind of a work around that someone else has done that anyone can suggest?

Your help is great appreciated, thank you!