Do older posts in an Elgg sites forum threads disappear?

Do older posts in an Elgg site's forum threads disappear? I have noticed such

  • We're working on fixing this. This is a crazy week with the upgrade. Unfortunately, we made a quick decision to do it and it wasn't fully tested.

  • The benefit of doing it this way is that now we have hundreds of people looking for bugs and actually trying to use the site instead of just a few, so the process of finding them is quite a bit faster and less tedious. :)