I don't know which plugin is causing the terrain to revert to it's original form after a TNT explosion. This also happens for creeper explosion. List of plugins: Essentials Authme AutoSave BurningMob ChatManager CraftBukkitUpToDate Godpowers IPGET Lockette MobDisguise ModifyWorld MoveCraft Myhome OPImmunity OpUpdate (what is this?) Ptweaks Regios ScheduledAnnouncer Simplesoawn SimpleWhisper WeatherPLugin WelcomeMessage