Depop and cleanup existing node npc's when command executed again. Also remove string from "name" and leave metadata in "lastname" otherwise it is visually too busy

zone/command.cpp

@@ -2044,6 +2044,16 @@ void command_grid(Client *c, const Seperator *sep)
 			return;
 		}
 
+		/**
+		 * Depop any node npc's already spawned
+		 */
+		auto &mob_list = entity_list.GetMobList();
+		for (auto itr = mob_list.begin(); itr != mob_list.end(); ++itr) {
+			Mob *mob = itr->second;
+			if (mob->IsNPC() && mob->GetRace() == 2254)
+				mob->Depop();
+		}
+
 		/**
 		 * Spawn grid nodes
 		 */