Yesterday I accidentally deleted an important thread that would be quite difficult to reproduce. It's fairly important I recreate it.

If there was a way to reimport it from my classic installation I could patch up the additional pasts since the switch to Threads.

Any help would be appreciated.

Unfortunately, while not impossible it's nearly that way. There is no way to do it with the importer without duplicating users, etc. The only perceivable way would be to actually recreate all of the posts by hand and then go through one by one and reattach them to the proper userid. It would be a lot of work, and you'd need to know your way around the database as well.

Not the answer you wanted to hear I'm sure.

How about this ...
1. Backup my old ubb
2. delete all forums except the one that has my valuable post in it
3. rename the remaining forum to something that won't collide when imported
4. delete all users except myself
5. delete all banlists
6. Do the import

Would this work?
If so, what about my account existing in both the soruce of the import and dest? whould that bork things?

If you had other people post in the topic, then that wouldn't work, as there wouldn't be any user to attach their posts to. If the only person to post in the topic was you then it might be quicker just to copy and paste to recreate the topic.

Take your old backup, find the forum folder and upload it to the server, rebuild forum stats; while quick and dirty, classic did a fairly simple way of keeping track of things and this will likely work fine.

Gizmo, the post still exists on my old 'classic' board, the problem was that it got deleted off my new 'threads' board and I wanted to recover it.

As Rick points out; you can't really reimport a thread from the old forums without great difficulty.

So, my yucky solution was to put back my old ultimatebb.* files to stop the redirect. Then fire-up my old classic boards.
After loading up my old boards, I simply opened the *valuable* thread that I needed and used the 'print view' to get all posts displayed. I then used Acrobat's WebCapture feature to capture the thread in PDF … not purdy, but it works; preserving all posts, posters, and date/time stamps .. whew!

I then put back the redirect files and we are good to go again.

Remind me not to mess with the boards late at night when I'm tired. Heh.