There's nothing like working on a live site... staging, we've heard of it. Seems to work now, of a fashion

I think I've used it quite recently. Within the last couple of weeks, surely?

I am an Australian. Last week. Saturday, in fact.

What'd you do, Stevie? What'd you do?

It worked on some games, not others. Somehow, an index had got out-of-synch with the actual gameplay, which caused the de-whoopsing to fail. This is a brittle misfeature of the server code, motivated by a desire to keep the number of SQL queries to a minimum, which is probably a somewhat redundant optimisation given the tiny amount of data involved.

Glad to hear that the feature is used by people, though, as going backwards in time is not so straightforward.