Dpwnload Update V3.3:
Put extracted files in client/server root folder with replacement of all files - all old levels will work as before. It will add new levels and update few exist files - so you no need to make any backups. However, if some thing will work wrong you can say about it here
Levels:
levels/MP_TANKBATTLE_002 - CONQUEST CO-OP
levels/MP_SP_006 - CONQUEST CO-OP
levels/MP_ZOMBIE_MOD_001 - CONQUEST CO-OP
levels/MP_SP_006CQ - CONQUEST
levels/MP_TANKBATTLE_001 - CONQUEST
levels/MP_SP_TESTMOD_006 - CONQUEST
levels/MP_NIGHT_005 - Were restored to default version (badbaubau modpack)
levels/MP_005 - Were restored to default version (dice)