HI Sammy!
Thanks so much for flagging this to my attention. Purely an oversight on my part, now corrected.
For those wondering: When I split or move a topic, I lock it first so no replies can be made while it is being modified. This is to prevent Bad Things from happening behind the scenes (no point confusing the server). If the topic is moved, I place a pointer where it had been for a couple days to redirect, then go back and unlock the topic. Missed it this time, though, so very much appreciate your keen eyes.
I've enjoyed John's account very much, and want to reply to it myself.
All the best,
Dan.