diff --git a/core/src/io/anuke/mindustry/entities/EntityGroup.java b/core/src/io/anuke/mindustry/entities/EntityGroup.java
index d3010c84f3..a13102eac3 100644
--- a/core/src/io/anuke/mindustry/entities/EntityGroup.java
+++ b/core/src/io/anuke/mindustry/entities/EntityGroup.java
@@ -170,8 +170,10 @@ public class EntityGroup<T extends Entity>{
     }
 
     public void clear(){
-        for(T entity : entityArray)
+        for(T entity : entityArray){
+            entity.removed();
             entity.setGroup(null);
+        }
 
         for(T entity : entitiesToAdd)
             entity.setGroup(null);
diff --git a/core/src/io/anuke/mindustry/io/JsonIO.java b/core/src/io/anuke/mindustry/io/JsonIO.java
index 500374994a..15f1e18476 100644
--- a/core/src/io/anuke/mindustry/io/JsonIO.java
+++ b/core/src/io/anuke/mindustry/io/JsonIO.java
@@ -2,6 +2,7 @@ package io.anuke.mindustry.io;
 
 import io.anuke.arc.collection.*;
 import io.anuke.arc.util.serialization.*;
+import io.anuke.arc.util.serialization.Json.*;
 import io.anuke.mindustry.*;
 import io.anuke.mindustry.content.*;
 import io.anuke.mindustry.game.*;
@@ -11,10 +12,13 @@ import io.anuke.mindustry.world.*;
 
 @SuppressWarnings("unchecked")
 public class JsonIO{
-    private static CustomJson json = new CustomJson();
+    private static CustomJson jsonBase = new CustomJson();
+    private static Json json = new Json(){{
+        apply(this);
+    }};
 
     public static String write(Object object){
-        return json.toJson(object);
+        return json.toJson(object, object.getClass());
     }
 
     public static <T> T copy(T object){
@@ -26,66 +30,50 @@ public class JsonIO{
     }
 
     public static <T> T read(Class<T> type, T base, String string){
-        return json.fromBaseJson(type, base, string);
+        return jsonBase.fromBaseJson(type, base, string);
     }
 
     public static String print(String in){
         return json.prettyPrint(in);
     }
 
-    static class CustomJson extends Json{
-        private Object baseObject;
+    private static void apply(Json json){
+        json.setIgnoreUnknownFields(true);
+        json.setElementType(Rules.class, "spawns", SpawnGroup.class);
+        json.setElementType(Rules.class, "loadout", ItemStack.class);
 
-        {
-            setIgnoreUnknownFields(true);
-            setElementType(Rules.class, "spawns", SpawnGroup.class);
-            setElementType(Rules.class, "loadout", ItemStack.class);
-
-            setSerializer(Zone.class, new Serializer<Zone>(){
-                @Override
-                public void write(Json json, Zone object, Class knownType){
-                    json.writeValue(object.name);
-                }
-
-                @Override
-                public Zone read(Json json, JsonValue jsonData, Class type){
-                    return Vars.content.getByName(ContentType.zone, jsonData.asString());
-                }
-            });
-
-            setSerializer(Item.class, new Serializer<Item>(){
-                @Override
-                public void write(Json json, Item object, Class knownType){
-                    json.writeValue(object.name);
-                }
-
-                @Override
-                public Item read(Json json, JsonValue jsonData, Class type){
-                    if(jsonData.asString() == null) return Items.copper;
-                    Item i =  Vars.content.getByName(ContentType.item, jsonData.asString());
-                    return i == null ? Items.copper : i;
-                }
-            });
-
-            //TODO extremely hacky and disgusting
-            for(Block block : Vars.content.blocks()){
-                Class type = block.getClass();
-                if(type.isAnonymousClass()) type = type.getSuperclass();
-
-                setSerializer(type, new Serializer<Block>(){
-                    @Override
-                    public void write(Json json, Block object, Class knownType){
-                        json.writeValue(object.name);
-                    }
-
-                    @Override
-                    public Block read(Json json, JsonValue jsonData, Class type){
-                        return Vars.content.getByName(ContentType.block, jsonData.asString());
-                    }
-                });
+        json.setSerializer(Zone.class, new Serializer<Zone>(){
+            @Override
+            public void write(Json json, Zone object, Class knownType){
+                json.writeValue(object.name);
             }
 
-            setSerializer(Block.class, new Serializer<Block>(){
+            @Override
+            public Zone read(Json json, JsonValue jsonData, Class type){
+                return Vars.content.getByName(ContentType.zone, jsonData.asString());
+            }
+        });
+
+        json.setSerializer(Item.class, new Serializer<Item>(){
+            @Override
+            public void write(Json json, Item object, Class knownType){
+                json.writeValue(object.name);
+            }
+
+            @Override
+            public Item read(Json json, JsonValue jsonData, Class type){
+                if(jsonData.asString() == null) return Items.copper;
+                Item i =  Vars.content.getByName(ContentType.item, jsonData.asString());
+                return i == null ? Items.copper : i;
+            }
+        });
+
+        //TODO extremely hacky and disgusting
+        for(Block block : Vars.content.blocks()){
+            Class type = block.getClass();
+            if(type.isAnonymousClass()) type = type.getSuperclass();
+
+            json.setSerializer(type, new Serializer<Block>(){
                 @Override
                 public void write(Json json, Block object, Class knownType){
                     json.writeValue(object.name);
@@ -96,40 +84,60 @@ public class JsonIO{
                     return Vars.content.getByName(ContentType.block, jsonData.asString());
                 }
             });
+        }
 
-            setSerializer(TeamData.class, new Serializer<TeamData>(){
-                @Override
-                public void write(Json json, TeamData object, Class knownType){
-                    json.writeObjectStart();
-                    json.writeValue("brokenBlocks", object.brokenBlocks.toArray());
-                    json.writeValue("team", object.team.ordinal());
-                    json.writeObjectEnd();
-                }
+        json.setSerializer(Block.class, new Serializer<Block>(){
+            @Override
+            public void write(Json json, Block object, Class knownType){
+                json.writeValue(object.name);
+            }
 
-                @Override
-                public TeamData read(Json json, JsonValue jsonData, Class type){
-                    long[] blocks = jsonData.get("brokenBlocks").asLongArray();
-                    Team team = Team.all[jsonData.getInt("team", 0)];
-                    TeamData out = new TeamData(team, EnumSet.of(new Team[]{}));
-                    out.brokenBlocks = new LongQueue(blocks);
-                    return out;
-                }
-            });
+            @Override
+            public Block read(Json json, JsonValue jsonData, Class type){
+                return Vars.content.getByName(ContentType.block, jsonData.asString());
+            }
+        });
 
-            setSerializer(ItemStack.class, new Serializer<ItemStack>(){
-                @Override
-                public void write(Json json, ItemStack object, Class knownType){
-                    json.writeObjectStart();
-                    json.writeValue("item", object.item);
-                    json.writeValue("amount", object.amount);
-                    json.writeObjectEnd();
-                }
+        json.setSerializer(TeamData.class, new Serializer<TeamData>(){
+            @Override
+            public void write(Json json, TeamData object, Class knownType){
+                json.writeObjectStart();
+                json.writeValue("brokenBlocks", object.brokenBlocks.toArray());
+                json.writeValue("team", object.team.ordinal());
+                json.writeObjectEnd();
+            }
 
-                @Override
-                public ItemStack read(Json json, JsonValue jsonData, Class type){
-                    return new ItemStack(json.getSerializer(Item.class).read(json, jsonData.get("item"), Item.class), jsonData.getInt("amount"));
-                }
-            });
+            @Override
+            public TeamData read(Json json, JsonValue jsonData, Class type){
+                long[] blocks = jsonData.get("brokenBlocks").asLongArray();
+                Team team = Team.all[jsonData.getInt("team", 0)];
+                TeamData out = new TeamData(team, EnumSet.of(new Team[]{}));
+                out.brokenBlocks = new LongQueue(blocks);
+                return out;
+            }
+        });
+
+        json.setSerializer(ItemStack.class, new Serializer<ItemStack>(){
+            @Override
+            public void write(Json json, ItemStack object, Class knownType){
+                json.writeObjectStart();
+                json.writeValue("item", object.item);
+                json.writeValue("amount", object.amount);
+                json.writeObjectEnd();
+            }
+
+            @Override
+            public ItemStack read(Json json, JsonValue jsonData, Class type){
+                return new ItemStack(json.getSerializer(Item.class).read(json, jsonData.get("item"), Item.class), jsonData.getInt("amount"));
+            }
+        });
+    }
+
+    static class CustomJson extends Json{
+        private Object baseObject;
+
+        {
+            apply(this);
         }
 
         @Override
diff --git a/server/src/io/anuke/mindustry/server/ServerControl.java b/server/src/io/anuke/mindustry/server/ServerControl.java
index 8eeeba9e1c..ffa388b44d 100644
--- a/server/src/io/anuke/mindustry/server/ServerControl.java
+++ b/server/src/io/anuke/mindustry/server/ServerControl.java
@@ -14,7 +14,7 @@ import io.anuke.mindustry.entities.type.Player;
 import io.anuke.mindustry.game.*;
 import io.anuke.mindustry.game.EventType.GameOverEvent;
 import io.anuke.mindustry.gen.Call;
-import io.anuke.mindustry.io.SaveIO;
+import io.anuke.mindustry.io.*;
 import io.anuke.mindustry.maps.Map;
 import io.anuke.mindustry.maps.MapException;
 import io.anuke.mindustry.net.Administration.PlayerInfo;