diff --git a/src/EcsWorld.pools.cs b/src/EcsWorld.pools.cs
index 4457dc1..c1e71bf 100644
--- a/src/EcsWorld.pools.cs
+++ b/src/EcsWorld.pools.cs
@@ -23,14 +23,11 @@ namespace DCFApixels.DragonECS
         public IEcsPool GetPool(Type componentType)
         //TODO. Есть проблема, возврат виртуального пула и последующая девиртуализация сделает ссылку невалидной. Одно из решений возвращать обертку
         {
-#if DEBUG
-#endif
             int componentTypeID = GetComponentTypeID(componentType);
             ref var pool = ref _pools[componentTypeID];
             if (pool == _nullPool)
             {
-                pool = new EcsAnonymousPool();
-                pool.OnInit(this, _poolsMediator, componentTypeID);
+                return null;
             }
             return pool;
         }
@@ -191,18 +188,13 @@ namespace DCFApixels.DragonECS
 
             var oldPool = _pools[componentTypeID];
 
-            //if (oldPool.IsNullOrDummy() == false)
-            //{
-            //    Throw.UndefinedException();
-            //}
+            if (oldPool != _nullPool)
+            {
+                Throw.UndefinedException();
+            }
 
             _pools[componentTypeID] = newPool;
             newPool.OnInit(this, _poolsMediator, componentTypeID);
-            if (oldPool is EcsAnonymousPool virtualPool)
-            {
-                var data = virtualPool.GetDevirtualizationData();
-                newPool.OnDevirtualize(data);
-            }
             return newPool;
         }
         #endregion
diff --git a/src/Pools/EcsHybridPool.cs b/src/Pools/EcsHybridPool.cs
index 3cf02eb..26e40e8 100644
--- a/src/Pools/EcsHybridPool.cs
+++ b/src/Pools/EcsHybridPool.cs
@@ -210,22 +210,6 @@ namespace DCFApixels.DragonECS
             _entities = new int[capacity];
             _itemsCount = 0;
         }
-        void IEcsPoolImplementation.OnDevirtualize(EcsAnonymousPool.Data data)
-        {
-            if (_items.Length < data.ComponentsCount)
-            {
-                Array.Resize(ref _items, ArrayUtility.NormalizeSizeToPowerOfTwo(data.ComponentsCount));
-            }
-            foreach (var item in data.RawComponents)
-            {
-                _mapping[item.EntityID] = ++_itemsCount;
-                _items[_itemsCount] = (T)item.RawData;
-            }
-            foreach (var item in data.Listeners)
-            {
-                _listeners.Add(item);
-            }
-        }
         void IEcsPoolImplementation.OnWorldResize(int newSize)
         {
             Array.Resize(ref _mapping, newSize);
@@ -428,7 +412,7 @@ public class HybridTypeMapping
 
     public void AddIntsanceType(object instance)
     {
-        _canInstantiatedTypes.Add(instance.GetType());
+       // _canInstantiatedTypes.Add(instance.GetType());
     }
 
     public void Declare<T>()
diff --git a/src/Pools/EcsPool.cs b/src/Pools/EcsPool.cs
index 75d0f78..e8f019c 100644
--- a/src/Pools/EcsPool.cs
+++ b/src/Pools/EcsPool.cs
@@ -178,22 +178,6 @@ namespace DCFApixels.DragonECS
             _items = new T[ArrayUtility.NormalizeSizeToPowerOfTwo(world.Config.Get_PoolComponentsCapacity())];
             _itemsCount = 0;
         }
-        void IEcsPoolImplementation.OnDevirtualize(EcsAnonymousPool.Data data)
-        {
-            if(_items.Length < data.ComponentsCount)
-            {
-                Array.Resize(ref _items, ArrayUtility.NormalizeSizeToPowerOfTwo(data.ComponentsCount));
-            }
-            foreach (var item in data.RawComponents)
-            {
-                _mapping[item.EntityID] = ++_itemsCount;
-                _items[_itemsCount] = (T)item.RawData;
-            }
-            foreach (var item in data.Listeners)
-            {
-                _listeners.Add(item);
-            }
-        }
         void IEcsPoolImplementation.OnWorldResize(int newSize)
         {
             Array.Resize(ref _mapping, newSize);
diff --git a/src/Pools/EcsPoolBase.cs b/src/Pools/EcsPoolBase.cs
index b25c8a7..97ca510 100644
--- a/src/Pools/EcsPoolBase.cs
+++ b/src/Pools/EcsPoolBase.cs
@@ -53,7 +53,6 @@ namespace DCFApixels.DragonECS
     public interface IEcsPoolImplementation : IEcsPool
     {
         void OnInit(EcsWorld world, EcsWorld.PoolsMediator mediator, int componentTypeID);
-        void OnDevirtualize(EcsAnonymousPool.Data data);
         void OnWorldResize(int newSize);
         void OnReleaseDelEntityBuffer(ReadOnlySpan<int> buffer);
         void OnWorldDestroy();
@@ -114,10 +113,6 @@ namespace DCFApixels.DragonECS
             void IEcsPool.SetRaw(int entity, object dataRaw) => throw new NotImplementedException();
             void IEcsPool.Copy(int fromEntityID, int toEntityID) => throw new NotImplementedException();
             void IEcsPool.Copy(int fromEntityID, EcsWorld toWorld, int toEntityID) => throw new NotImplementedException();
-            void IEcsPoolImplementation.OnDevirtualize(EcsAnonymousPool.Data virtualPoolData)
-            {
-                Throw.UndefinedException();
-            }
             #endregion
 
             #region Callbacks
diff --git a/src/Pools/EcsTagPool.cs b/src/Pools/EcsTagPool.cs
index 8e4bfd6..775ceca 100644
--- a/src/Pools/EcsTagPool.cs
+++ b/src/Pools/EcsTagPool.cs
@@ -159,18 +159,6 @@ namespace DCFApixels.DragonECS
             _mapping = new bool[world.Capacity];
             _count = 0;
         }
-        void IEcsPoolImplementation.OnDevirtualize(EcsAnonymousPool.Data data)
-        {
-            _count = data.ComponentsCount;
-            foreach (var item in data.RawComponents)
-            {
-                _mapping[item.EntityID] = true;
-            }
-            foreach (var item in data.Listeners)
-            {
-                _listeners.Add(item);
-            }
-        }
         void IEcsPoolImplementation.OnWorldResize(int newSize)
         {
             Array.Resize(ref _mapping, newSize);
diff --git a/src/Pools/EcsAnonymousPool.cs b/src/Pools/VirtualPool.cs
similarity index 95%
rename from src/Pools/EcsAnonymousPool.cs
rename to src/Pools/VirtualPool.cs
index 3b8b95e..cda8df3 100644
--- a/src/Pools/EcsAnonymousPool.cs
+++ b/src/Pools/VirtualPool.cs
@@ -5,8 +5,8 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 
-//EcsAnonymousPool > EcsVirtualPool<T> > EcsPool<T>
-public class EcsAnonymousPool : IEcsPoolImplementation, IEnumerable
+
+internal class VirtualPool : IEcsPoolImplementation, IEnumerable
 {
     private EcsWorld _source;
     private Type _componentType;
@@ -200,7 +200,7 @@ public class EcsAnonymousPool : IEcsPoolImplementation, IEnumerable
     }
     public readonly ref struct Data
     {
-        private readonly EcsAnonymousPool _target;
+        private readonly VirtualPool _target;
         
         public int ComponentsCount
         {
@@ -216,16 +216,16 @@ public class EcsAnonymousPool : IEcsPoolImplementation, IEnumerable
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Data(EcsAnonymousPool target)
+        public Data(VirtualPool target)
         {
             _target = target;
         }
 
         public readonly ref struct ListenersIterator
         {
-            private readonly EcsAnonymousPool _target;
+            private readonly VirtualPool _target;
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            public ListenersIterator(EcsAnonymousPool target)
+            public ListenersIterator(VirtualPool target)
             {
                 _target = target;
             }
@@ -235,9 +235,9 @@ public class EcsAnonymousPool : IEcsPoolImplementation, IEnumerable
 
         public readonly ref struct RawDataIterator
         {
-            private readonly EcsAnonymousPool _target;
+            private readonly VirtualPool _target;
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            public RawDataIterator(EcsAnonymousPool target)
+            public RawDataIterator(VirtualPool target)
             {
                 _target = target;
             }
@@ -309,6 +309,6 @@ public static class VirtualPoolExtensions
 {
     public static bool IsVirtual(this IEcsPool self)
     {
-        return self is EcsAnonymousPool;
+        return self is VirtualPool;
     }
 }
\ No newline at end of file