diff --git a/src/EcsWorld.pools.cs b/src/EcsWorld.pools.cs
index 2c8b49b..b1b2815 100644
--- a/src/EcsWorld.pools.cs
+++ b/src/EcsWorld.pools.cs
@@ -100,7 +100,7 @@ namespace DCFApixels.DragonECS
         }
         #endregion
 
-        #region Declare/Create
+        #region Declare
         private int DeclareOrGetComponentTypeID(int componentTypeCode)
         {
             if (_cmpTypeCode_2_CmpTypeIDs.TryGetValue(componentTypeCode, out int ComponentTypeID) == false)
@@ -120,6 +120,9 @@ namespace DCFApixels.DragonECS
             }
             return false;
         }
+        #endregion
+
+        #region Create
         private TPool CreatePool<TPool>() where TPool : IEcsPoolImplementation, new()
         {
             int poolTypeCode = EcsTypeCode.Get<TPool>();
@@ -186,7 +189,13 @@ namespace DCFApixels.DragonECS
 
             }
 
-            if (_pools[componentTypeID] != _nullPool)
+            var oldPool = _pools[componentTypeID];
+            if (oldPool is EcsVirtualPool virtualPool)
+            {
+                var data = virtualPool.GetDevirtualizationData();
+                newPool.OnDevirtualize(data);
+            }
+            if (oldPool.IsNullOrDummy() == false)
             {
                 Throw.UndefinedException();
             }
@@ -197,7 +206,6 @@ namespace DCFApixels.DragonECS
         }
         #endregion
 
-
         #region Pools mediation
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private void RegisterEntityComponent(int entityID, int componentTypeID, EcsMaskChunck maskBit)
diff --git a/src/Pools/EcsHybridPool.cs b/src/Pools/EcsHybridPool.cs
index 838ea92..57a7d33 100644
--- a/src/Pools/EcsHybridPool.cs
+++ b/src/Pools/EcsHybridPool.cs
@@ -201,7 +201,7 @@ namespace DCFApixels.DragonECS
             _componentTypeID = componentTypeID;
             _maskBit = EcsMaskChunck.FromID(componentTypeID);
 
-            const int capacity = 512;
+            const int capacity = 512;//TODO заменить на значение из конфига
 
             _mapping = new int[world.Capacity];
             _recycledItems = new int[128];
diff --git a/src/Pools/EcsVirtualPool.cs b/src/Pools/EcsVirtualPool.cs
index 45e57cc..4f9a166 100644
--- a/src/Pools/EcsVirtualPool.cs
+++ b/src/Pools/EcsVirtualPool.cs
@@ -22,6 +22,8 @@ public class EcsVirtualPool : IEcsPoolImplementation, IEnumerable
 
     private EcsWorld.PoolsMediator _mediator;
 
+    private bool _isDevirtualized = false;
+
     #region Properties
     public int ComponentID
     {
@@ -43,6 +45,10 @@ public class EcsVirtualPool : IEcsPoolImplementation, IEnumerable
     {
         get { return _mapping.Length; }
     }
+    public bool IsDevirtualized
+    {
+        get { return _isDevirtualized; }
+    }
     #endregion
 
     #region Callbacks
@@ -187,6 +193,10 @@ public class EcsVirtualPool : IEcsPoolImplementation, IEnumerable
     #endregion
 
     #region Devirtualization
+    public Data GetDevirtualizationData()
+    {
+        return new Data(this);
+    }
     public readonly ref struct Data
     {
         private readonly EcsVirtualPool _target;