Note it does not necessarily by default put the cursor on sector boundaries though you may be able to reset the cursor default to do that (but that setting is a problem if you need to do detailed editing at a very specific point so I don't use any of those click-to options).
Most i know of use cdwave (which is shareware) because it cuts tracks on sector boundaries. Audition doesn't cut tracks at sector boundaries so, for example, if you save files as 16 bit and burn to cdr, you won't have any short gaps in playback where track splits don't align on the boundary.
Also fwiw, I record in stereo pairs of mics, not iso tracks of each instrument. in audition i do all my editing in stereo pairs to keep levels and phase consistent in pairs. I don't even concern myself with multi track view until all pairs are completely and finally edited as a pair. Importantly i don't do anything with the timing, so don't remove any dead space from the beginning of any of the track pairs. Once I'm happy with the sound of each pair, i add to multitrAck view.
In multi track view, i load each pair and compare the timing across pairs using both my ears/headphones and by zooming in on the waveforms to see if there is any latency. Use the mute and isolate tools in multi track view to help perform this task. Select one pair to be the reference pair for timing then key all the other pairs to the reference pair. i then make any adjustments for latency by going back into edit view and either adding or subtracting space at the beginning of the track pair. When you do this, audition returns a message that you're about to mess with the alignment in multi track, but you know that so accept the warning and move forward.
Once all the tracks pairs are aligned, i go back into multi track view and mix them all together to taste by raising and lowering the levels of each pair while listening to them all payback together at the same time.
Once I'm happy with the relative mix, i go to the multi track pull down and select mixdown all tracks.
Only after doing this final mixdown do i remove any major sections of dead space before the music. In the mixtown file, i go back into edit view to cut the crap from the behinning and end, add fades at start and end, normalize the midtown to 0db and save both the mixdown master , the session, and any mods made to an input pair.
Then i track it and save each track as a flac file in cdwave.