In the old master was a button to the legacy wiki (from years ago). Due to a lack of manpower not everything had been transferred to the current one (the one in the wiki link at the top of the page on the migrated site). In the previous mapster the wiki button led to the legacy wiki and there was a hyperlink to the current one (because the moderators could not change the button at the top of the screen) but below the link was still the links for the legacy one.
Yeah I was a wiki/data moderator but I am only one person and it is a lot to transfer and update.
It's a bit of gamble because the web archive does not save all pages at all time. They are just key point. You could even find old websites that no more exist. And I guessed that since the update is recent and mapster is used by many users, there would be many saved pages in the archive and they would be pretty complete. I guessed right. Although, it's not easy to navigate in it because many pages might not be saved... but most of everything recent could be there. You could even go back in 2010 when you joined and see how it looked at that time (probably empty lol )
Edit: randomly saw this... I wish the images would still be there to see the server haha.