I'm guessing it changed between 1.1.3 and 1.2.1, and I'm not sure if there was a 1.1.4 or 1.2.0 between the two. I'm 98% sure there wasn't based on the version numbers showing on some of my streams, though.

I'm also not sure if rollback is possible. Likely a no.

Dice Swap was such a game-changer that I think a separate category is warranted. Without it, I don't think a new time is getting anywhere close to 10 minutes again.

Yep, it was. After I posted that run, the Citizen Sleeper account asked me about it on Twitter and said it'd be removed in the next update, and it looks like they were telling the truth!

Probably need some separation of the leaderboard to show the different versions, but I'm not sure what the process involved with that would be