S23U to S26U Upgrade today - some old notification sounds gone?

Did some of the old notification sounds get removed? I have some set up to old system sounds like "Prism", "Orion", and "Game". I can't find those on my S26U now. There may be others, those are the ones I've located... Thoughts? Do I have to go find a file for those and download them or am I missing something?