locking separate audio track in iMovie
I have a separate voice track to added to my video track (from a different mic).
I can detach the original audio no problem.
Syncing the new one is also relatively easy.
However can I attach or lock the new one?
If i split clip then only the movie is split and not the audio.
I can highlight both and do this, but with multiple clips this is long winded and prone to errors.
How can I lock the audio track/s to the video clips?
iMac 21.5″, macOS 10.13