Hello IPaddress,
the map you played on (10 Seton V2) is a modified version of Seton's Clutch with a script to teleport units from one pond to the other if they are close to the middle.
Scripts in maps make them unranked.
The map has been hidden. So people can play and download it from the vault but it won't show up in the client if you look for it.
Unless you use downlords client which ignores the fact that maps are marked as hidden in the current build.