Don't get me wrong:
I think it's great that you are combing through old posts that never got an answer.
However I wish you would also move them to some kind of archive as well.
It may be true that some of the questions might still be relevant, however a lot of them are not. Meanwhile current questions get burried under a pile of questions from years ago, with answers like "This feature was implemented in version...". This is not really helpful and makes browsing the forum a bit tedious.
As mentioned above it would be great if you could move those threads into a seperate subforum, so the chronological order and actuality gets somewhat preserved, while the answers can still be found if needed.