This thread has the potential to be very confusing to the members and readers of this forum.
First off: the missing titles are indeed a by-product of the import from Invisionfree. You may have forgotten this, but
I recall vividly the many hours I spent correcting so many threads of the errors caused by the import. One of the requirements was precisely to reinstate a title to many threads that had lost it, something that I did keeping the Invisionfree pages open next to the new ones generated by
the import script.
Hoi, the thing you are referring to in this thread, the Reality Shack archive present on the cluesforum,
is not accessible to anyone except admins, so I don't think it is really a problem in what state it is. Being an archive,
it is preserved in the form it was after the import without any restructuring or correction. Its separation from the internet is necessary or rather crucial especially to avoid redundancy of content with search engines. You don't want readers to be directed to archived and closed topics, when there are opened ones with the same content and more.
Like Simon said, Invisionfree is still up, and it works as the actual archive of the thing. But more importantly
all the same content is still present in the active part of the cluesforum simply restructured. In conclusion I would call this a false problem.