I found my posts by clicking on "Today’s" above right and directly under "Terms of Service." When I click on the navigation button and select "Threads," it says the category is currently empty. (Of course, if you don’t do that first, you won’t find this information so I’m not sure why I typed it!)
At any rate, if you lose a post, try the "Today’s" or "Last 24 Hours" buttons above. Presumably the topics will eventually be returned to the "Threads" section.
If this is a forum improvement, I suspect a lot of people will not find the threads and will disappear to a more user friendly forum. Just my humble opinion, of course. Perhaps I’m just cyberdeficient.