Is it possible to render an Audio Montage as regions (CD Tracks) to a new Montage with the audio in pauses intact? Or must this be done as a single long audio file?
No. CD tracks are defined by the markers, and this exclude the regions in between.
This being said, some users only use CD Splice markers, hence include a (custom) pause at the start of each track. In that case, the pauses are obviously included.
Maybe if you tell us the reason for wanting to do this, someone can come up with a good idea to get it done anyway?