diff --git a/Assets/MeshUtility/Runtime/BoneNormalizer.cs b/Assets/MeshUtility/Runtime/BoneNormalizer.cs
index cb528d5cd..4747dbd2e 100644
--- a/Assets/MeshUtility/Runtime/BoneNormalizer.cs
+++ b/Assets/MeshUtility/Runtime/BoneNormalizer.cs
@@ -222,7 +222,7 @@ namespace MeshUtility
         /// <param name="src">正規化前のSkinnedMeshRendererのTransform</param>
         /// <param name="dst">正規化後のSkinnedMeshRendererのTransform</param>
         /// <param name="boneMap">正規化前のボーンから正規化後のボーンを得る</param>
-        static void NormalizeSkinnedMesh(Transform src, Transform dst, Dictionary<Transform, Transform> boneMap, bool clearBlendShape)
+        static void NormalizeSkinnedMesh(Transform src, Transform dst, Dictionary<Transform, Transform> boneMap)
         {
             var srcRenderer = src.GetComponent<SkinnedMeshRenderer>();
             if (srcRenderer == null
@@ -237,15 +237,6 @@ namespace MeshUtility
             var srcMesh = srcRenderer.sharedMesh;
             var originalSrcMesh = srcMesh;
 
-            if (clearBlendShape)
-            {
-                // clear blendShape if not bake current blendshape
-                for (int i = 0; i < srcMesh.blendShapeCount; ++i)
-                {
-                    srcRenderer.SetBlendShapeWeight(i, 0);
-                }
-            }
-
             // 元の Transform[] bones から、無効なboneを取り除いて前に詰めた配列を作る
             var dstBones = srcRenderer.bones
                 .Where(x => x != null && boneMap.ContainsKey(x))
@@ -307,8 +298,10 @@ namespace MeshUtility
             //
 
             // clear blendShape always
+            var backcup = new List<float>();
             for (int i = 0; i < srcMesh.blendShapeCount; ++i)
             {
+                backcup.Add(srcRenderer.GetBlendShapeWeight(i));
                 srcRenderer.SetBlendShapeWeight(i, 0);
             }
 
@@ -442,6 +435,11 @@ namespace MeshUtility
                 srcRenderer.bones = new Transform[] { };
                 srcRenderer.sharedMesh = originalSrcMesh;
             }
+            // restore blendshape weights
+            for (int i = 0; i < backcup.Count; ++i)
+            {
+                srcRenderer.SetBlendShapeWeight(i, backcup[i]);
+            }
         }
 
         /// <summary>
@@ -481,11 +479,10 @@ namespace MeshUtility
         /// 回転とスケールを除去したヒエラルキーのコピーを作成する(MeshをBakeする)
         /// </summary>
         /// <param name="go">対象のヒエラルキーのルート</param>
-        /// <param name="clearBlendShapeBeforeNormalize">BlendShapeを0クリアするか否か。false の場合 BlendShape の現状を Bake する</param>
+        /// <param name="bakeCurrentBlendShape">BlendShapeを0クリアするか否か。false の場合 BlendShape の現状を Bake する</param>
         /// <param name="createAvatar">Avatarを作る関数</param>
         /// <returns></returns>
-        public static (GameObject, Dictionary<Transform, Transform>) Execute(GameObject go,
-        bool clearBlendShapeBeforeNormalize, CreateAvatarFunc createAvatar)
+        public static (GameObject, Dictionary<Transform, Transform>) Execute(GameObject go, CreateAvatarFunc createAvatar)
         {
             //
             // 正規化されたヒエラルキーを作る
@@ -503,7 +500,7 @@ namespace MeshUtility
                     continue;
                 }
 
-                NormalizeSkinnedMesh(src, dst, boneMap, clearBlendShapeBeforeNormalize);
+                NormalizeSkinnedMesh(src, dst, boneMap);
 
                 NormalizeNoneSkinnedMesh(src, dst);
             }
diff --git a/Assets/VRM/UniVRM/Editor/Format/VRMEditorExporter.cs b/Assets/VRM/UniVRM/Editor/Format/VRMEditorExporter.cs
index db5dde874..03d86ae3f 100644
--- a/Assets/VRM/UniVRM/Editor/Format/VRMEditorExporter.cs
+++ b/Assets/VRM/UniVRM/Editor/Format/VRMEditorExporter.cs
@@ -196,7 +196,7 @@ namespace VRM
             if (settings.PoseFreeze)
             {
                 // BoneNormalizer.Execute は Copy を作って正規化する。UNDO無用
-                target = VRMBoneNormalizer.Execute(target, settings.ForceTPose, false);
+                target = VRMBoneNormalizer.Execute(target, settings.ForceTPose);
                 destroy.Add(target);
             }
 
diff --git a/Assets/VRM/UniVRM/Editor/Format/VRMHumanoidNormalizerMenu.cs b/Assets/VRM/UniVRM/Editor/Format/VRMHumanoidNormalizerMenu.cs
index 6dbb8bc29..67d80b977 100644
--- a/Assets/VRM/UniVRM/Editor/Format/VRMHumanoidNormalizerMenu.cs
+++ b/Assets/VRM/UniVRM/Editor/Format/VRMHumanoidNormalizerMenu.cs
@@ -49,7 +49,7 @@ namespace VRM
             var go = Selection.activeObject as GameObject;
 
             // BoneNormalizer.Execute はコピーを正規化する。UNDO無用
-            Selection.activeGameObject = VRMBoneNormalizer.Execute(go, true, false);
+            Selection.activeGameObject = VRMBoneNormalizer.Execute(go, true);
         }
     }
 }
diff --git a/Assets/VRM/UniVRM/Scripts/SkinnedMeshUtility/VRMBoneNormalizer.cs b/Assets/VRM/UniVRM/Scripts/SkinnedMeshUtility/VRMBoneNormalizer.cs
index cc6b6cdd9..ce0b8170a 100644
--- a/Assets/VRM/UniVRM/Scripts/SkinnedMeshUtility/VRMBoneNormalizer.cs
+++ b/Assets/VRM/UniVRM/Scripts/SkinnedMeshUtility/VRMBoneNormalizer.cs
@@ -42,7 +42,7 @@ namespace VRM
         /// <param name="go">対象モデルのルート</param>
         /// <param name="forceTPose">強制的にT-Pose化するか</param>
         /// <returns>正規化済みのモデル</returns>
-        public static GameObject Execute(GameObject go, bool forceTPose, bool clearBlendShapeBeforeNormalize)
+        public static GameObject Execute(GameObject go, bool forceTPose)
         {
             //
             // T-Poseにする
@@ -66,7 +66,7 @@ namespace VRM
             //
             // 正規化されたヒエラルキーを作る
             //
-            var (normalized, bMap) = MeshUtility.BoneNormalizer.Execute(go, clearBlendShapeBeforeNormalize, (_src, dst, boneMap) =>
+            var (normalized, bMap) = MeshUtility.BoneNormalizer.Execute(go, (_src, dst, boneMap) =>
             {
                 var src = _src.GetComponent<Animator>();