The Official Blizzard MOD Map Left 2 Die from Battle.net works perfectly well with sc2allin1 in game type: Use Map Settings
Extra File Neededalso the following file must be installed
in your (example path) c:\program files\Starcraft II\Mods\ directory
WARNING:
if in the Mods\ directory exists a Folder named Left2Die.SC2Mod, you must delete this Folder to allow you install the Mod file mention before. otherwise custom mod models will be missing.