Mk 2 is significantly improved:
The Red Alert 2 & Yuri's Revenge Clean Up program offers several options for cleaning up your Red Alert 2 folder. Primarily, the program removes modification files to restore Red Alert 2 & Yuri's Revenge to their original settings. The Terrain Expansion, Assault Map Packs, custom maps, save games and Soundtrack Modifier can all be excluded from or included in the removal process.
http://www.planetcnc.com/marshall/download.htm