So, as the title suggests, I think an archive for parkour maps would be great.
How it works is that old/replaced maps can still be played without glitching into them. Of course it would be empty for now because of the server restart but it doesn't have to be put into effect immediately. If the reason they get replaced is to give newer parkour maps the spotlight, then there doesn't need to be any meeble reward. These are some reasons why I think it would work.
1. Bring older players back (from a few years from now)
I'm sure many people that play/used to play this server a few years back remember some of the old maps. Eg, planet parkour. Bringing back maps that get removed like it in their own section would entice veterans to come back and bring back nostalgic memories. Or, if like me, you don't complete them by the time they get removed.
2. Commemorate the old attractions of Meepcraft
If you are new, you might want to know about what Meepcraft/any server was like before you joined. By having an archive for removed and older maps, they can see what there was.
Last notes:
You could make it so you unlock one of the archived maps if you complete a certain parkour map. For example, completing a version of Cacti Parkour could unlock a previous version. This wouldn't have to be for every archived map (for example, leave the popular older maps unlocked from the get-go)
Tl;dr= Create a resting place for old parkour maps without completely removing them.
Feel free to share your criticism and thoughts and reply.