Correct. Pardon any incorrect info. I'm not in front of my machine, I'm speaking from memory. One thing I forgot to mention is that you may have to have some kind waveform preview first before a mixdown can be done. If I'm not mistaken, it may not work unless you have at least some preview. Works for me on every synth I insert. I don't think you can record to a synth track. What's happening is, you're triggering the instrument(s) on its corresponding track through midi messages (midi track created with the inserted synth). During playback the midi track triggers the synth on the different tracks and generates the waveform preview. Normally, the midi track driving the outputs is the last track if the midi option is selected in the synth dialog box.
I was not a soft-synth fan, until last year when I had to learn Logic. I was forced to learn this "bounce to track" thing. Prior production was all done with hardware synth rack modules.
I've use this this method heavily w/ Addictive Drums for about 1 year now.
Good luck!