Wipeout (Paul Daniels) was edited too to remove the contestant chat, the aim seemingly to squeeze it into a 30 minute transmission slot. Which they managed. Just.
I think if Challenge ever decide/need to get new prints to replace these edits, it'll have a major knock on to the schedule with regards to everything else and rules re: amount of advertising. Some edits are minor which they still use and predate Virgin (like some of Richard O'Brien's closing remarks on Crystal Maze for example which were edited back in the Flextech days). But I suspect if they're still using those edits 20 years on, there's little hope of anything newer being replaced.
VMTV were obsessed with hitting the top of the hour, to the extent that when they showed 1 vs 100 it was always paired with an episode of 'Aunties Bloomers' to fill it to an hour - to hell with what the current viewers might be interested in seeing. I seem to remember a day of 'back to back' 1 vs 100 which was rendered unwatchable thanks to those bloody Aunties Bloomers.
I remember the edits to the closing parts of the Crystal Maze way back when I first watched Challenge - 1998/9ish. I wouldn't be surprised if they were done whenever Challenge (or The Family Channel??) originally acquired them.
bilky asko and Gary Baldy gave kudos