Changed version in HDAdditionalLightData from float to int

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/HDLightEditor.cs

                     if (hdLightData != null)
                         hdLightData.UpdateAreaLightEmissiveMesh();
             };
+            
+            // If the light is disabled in the editor we force the light upgrade from his inspector
+            foreach (var additionalLightData in m_AdditionalLightDatas)
+                additionalLightData.UpgradeLight();
         }
 
         public override void OnInspectorGUI()
 
             if (m_UpdateAreaLightEmissiveMeshComponents)
                 UpdateAreaLightEmissiveMeshComponents();
-            
-            // If the light is disabled in the editor we force the light upgrade from his inspector
-            foreach (var additionalLightData in m_AdditionalLightDatas)
-                additionalLightData.UpgradeLight();
         }
 
         void DrawFoldout(SerializedProperty foldoutProperty, string title, Action func)

com.unity.render-pipelines.high-definition/HDRP/Lighting/Light/HDAdditionalLightData.cs

     [ExecuteInEditMode]
     public class HDAdditionalLightData : MonoBehaviour, ISerializationCallbackReceiver
     {
-        public const float currentVersion = 1.1f;
+        public const int currentVersion = 2;
-        [HideInInspector]
+        [HideInInspector, SerializeField]
-        public float version = currentVersion;
+        [System.Obsolete("version is deprecated, use m_Version instead")]
+        private float version = currentVersion;
+// Currently m_Version is not used and produce a warning, remove these pragmas at the next version incrementation
+#pragma warning disable 414
+        private int m_Version = currentVersion;
+#pragma warning restore 414
 
         // To be able to have correct default values for our lights and to also control the conversion of intensity from the light editor (so it is compatible with GI)
         // we add intensity (for each type of light we want to manage).
 
         public void OnAfterDeserialize()
         {
-            // If we are deserializing an old version, convert the light intensity to the new system
+            // Note: the field version is deprecated but we keep it for retro-compatibility reasons, you should use m_Version instead
+#pragma warning disable 0618
+#pragma warning restore 0618
             {
                 // Note: We can't access to the light component in OnAfterSerialize as it is not init() yet,
                 // so instead we use a boolean to do the upgrade in OnEnable().
 
         public void UpgradeLight()
         {
+// Disable the warning generated by deprecated fields (areaIntensity, directionalIntensity, ...)
+#pragma warning disable 0618
+
+            // If we are deserializing an old version, convert the light intensity to the new system
-// Pragma to disable the warning got by using deprecated properties (areaIntensity, directionalIntensity, ...)
-#pragma warning disable 0618
                 switch (lightTypeExtent)
                 {
                     case LightTypeExtent.Punctual:
                         intensity = areaIntensity;
                         break;
                 }
-#pragma warning restore 0618
+                needsIntensityUpdate_1_0 = false;
+            m_Version = currentVersion;
+            
+#pragma warning restore 0618
         }
     }
 }