In a nutshell:
  • I imported chords and an audio file into BIAB
  • One chord was missing (not BIAB's fault), so I inserted a bar to add the chord manually
  • The bar was also inserted into the audio track
  • Same problem when deleting a bar

This default behavior may be useful in most cases, but it is very annoying if you only want to insert missing bars that are already present in the audio file.
Is there a way to freeze the audio track so that it remains unchanged?
A reference to the forum or the manual (I searched both but couldn't find anything) would be very welcome.