I am working with a muticam clip in my timeline and have added an intro with music playing before the dialogue begins. In the intro I can hear the beginning of dialogue even though the multicam clip doesn't begin until after the intro. I've tried muting all the channels in the intro to see if it's coming from one of them but it's not. I can't figure out how to get rid of it!
If you've got a transition effect between the intro and multicam, it may have extended the multicam to make the transition. Double-click the audio on the multicam to expand it and look to see if there are any waveforms that show up underneath the transition. If so, likely the source of what you're hearing. Will need to trim/keyframe that audio.