[Gabrielle Owens Thorndyke]

Well…it’s involved, but it should do the job:

1) create a duplicate track then hide/mute your original (this is your reference track)

2) on the duplicate track, use the volume tool to mute your voice (save a back up copy of this, just in case)

3) create a third track and punch in (re-record) your dialog, using the edited track as reference.

4) mix your dialog so everything balances and export the mix as a new track.

Or just recall your cast and do it again. Or next time, mic your actors separately, so each one is a separate track. It all depends on how much time/resources you want to spend on your project.