Hi skynet,
the maps don't need fixing, they are as they should be. If there was a problem with them experienced MIX players like Goldberg or Flipper (whom are also map managers) would have deleted them long ago. The maps are kind of iconic, Let's go, baby is one of the first "long maps" uploaded, Metallica Tour is just... plain awesome. Both these maps are among the most popular maps on the server, frequently being bought. They have been played hundreds of times, -if not thousands of times-, for several years, and I've never seen anyone complain about them. Removing them and the stats just like that is just brutal, it's like removing the benox maps from race.