Originally, I moved the forums just to "test" them on a new server (several users were having issues). Another test was to clean up tons of older posts on the existing servers. I'd still like there are other options for pruning but it's not as important now because I've decided to go with the new server and will be moving tons of stuff on several sites over the next several weeks. Should be fun...not. But I've done it before so I have several tricks in my back pocket already for how to work around propagation issues, etc.
Thanks,
Bill
