You're right something got messed up with that link. I did and search and found it here;
https://www.cakewalk.com/Documentation?product=SONAR&language=3&help=NewFeatures.14.html I also discovered something. In addition to getting rid of some of those obscure formats in the export list, you can get rid of SoundCloud wave, SoundCloud mp3, SoundCloud Flac, and You Tube Publish. These are all in the external encoder. I copied the settings just in case one day I want them again.
My export box is nice and lean now and since I did a clean Win7 install, the window is working a lot better now, it's retaining my last file type choice.