Rebranding a Forum

I'm going to rebrand one of my forums, last year I opened up a forum called Glitch Talk that was dedicated to discussing glitches in video games and software. Now I plan on rebranding the forum to talk about Glitch the indie animation studio! I don't have too much knowledge into fixing glitches in my favorite games, I had hoped the community would have motivated me to do so but that's not the case it seems. And the domain name was renewed last month so I plan on rebranding it like I mentioned before. Anyways have you ever rebranded a forum before? I'm going to archive the threads and posts already made on the forum so they're not completely lost. Did you do this as well when you rebranded your forum?