Putting it into text here as I've had lots of people ask about updating maps to newer versions.
Majority of maps with new versions require a wipe of all times, this is something we really don't want to do as it's not fair to the players who spend time grinding for completions or top times. I don't want people joining the server and going "Oh this map is going to get updated anyway, I won't bother running it". Nor do I want people joining the server and trying to figure out what happened to their hard-earned times.
For quite a while now I have only been adding maps after I've explicitly heard from the authors that the version is final. Yet plenty of these maps have gone on to receive updates, which is frustrating. I understand the difficulty of getting proper feedback on maps before releasing them, and I think this is probably an area that would be good to get more support or improvements for in the jump community.
That also being said, there's the time and effort required to add a map. Maps take me an average of about 30 minutes to add each, this includes uploading, zoning, tiering, !level data, author data, entity editing and more.
I have probably shown that I much prefer to add new maps than update existing ones. Even ones that were supposed to be simple took ages because of things like the whole map changing coordinates, making zones useless *cough* LANC *cough*. I hope this sheds some light on why.
Going forward we're trying to think of how it's best to approach this. One option is some sort of map versioning support, where times on older versions of the map are kept and are accessible, but have all the points removed from them. However, would require extensive work, and still feels like we are wiping times and points from players. So I'm not happy with this as a solution, and I'm also concious that css surf manages to avoid all of this through a different community mindset around mapping.