Lauch migration at creation to version

com.unity.render-pipelines.high-definition/HDRP/Lighting/Reflection/HDAdditionalReflectionData.cs

                 {
                     needMigrateToHDProbeChild = true;
                 }
-                else if (m_Version < (int)Version.UseInfluenceVolume)
+                if (m_Version < (int)Version.UseInfluenceVolume)
-                else if (m_Version < (int)Version.MergeEditors)
+                if (m_Version < (int)Version.MergeEditors)
-                else
+                else if(m_Version < (int)Version.Current)
+        }
+
+        internal override void Awake()
+        {
+            base.Awake();
+
+            //launch migration at creation too as m_Version could not have an
+            //existance in older version
+            OnAfterDeserialize();
+            OnEnable();   
         }
 
         void OnEnable()

com.unity.render-pipelines.high-definition/HDRP/Lighting/Reflection/HDProbe.cs

             }
         }
 
-        internal void Awake()
+        internal virtual void Awake()
         {
             if (influenceVolume == null)
                 influenceVolume = new InfluenceVolume();

com.unity.render-pipelines.high-definition/HDRP/Lighting/Reflection/Volumes/InfluenceVolume.cs

 
         // Sphere
         [SerializeField, FormerlySerializedAs("m_SphereBaseRadius")]
-        float m_SphereRadius = 1;
+        float m_SphereRadius = 3f;
         [SerializeField, FormerlySerializedAs("m_SphereInfluenceFade")]
         float m_SphereBlendDistance;
         [SerializeField, FormerlySerializedAs("m_SphereInfluenceNormalFade")]