Hopefully this is in the right spot, apologies to the hardworking mods if it isn't.
I have a 'parent' forum which contains live topics and a couple of subforums which are mostly for reference.
On my board index, I see the parent forum listed, but the 'last post' shown next to it is from one of its subforums and is several days old. There have been many more recent posts on the topics directly within the parent forum, but that isn't reflected on the index.
Why is the 'last post' info coming from the subforum rather than the newer topics in the parent?