Apparently, when the mods try to move a thread to another forum, they only succeed in having it duplicated there.

JFE wanted to move a thread about Krispy Kreme from Omni to Dining Buzz. The thread now appears in both forums and if you post in one it appears in the other as well.

(Having replied in the Dining Buzz Forum, I discovered my reply appearing in Omni. Obviously, I immediately edited it out on the Omni Forum and it automatically got edited out on Dining Buzz as well.)

If this glitch doesn't get fixed it will never make sense for a mod to move a thread.