diff --git a/Assets/VRM10/Runtime/Migration/MeshUpdater.cs b/Assets/VRM10/Runtime/Migration/MeshUpdater.cs
index 01fc05ef6..5fdf3fe61 100644
--- a/Assets/VRM10/Runtime/Migration/MeshUpdater.cs
+++ b/Assets/VRM10/Runtime/Migration/MeshUpdater.cs
@@ -82,6 +82,7 @@ namespace UniVRM10
                 var uv = AddAccessor<Vector2>(mesh.VertexBuffer.TexCoords);
                 var weights = AddAccessor<Vector4>(mesh.VertexBuffer.Weights);
                 var joints = AddAccessor<UShort4>(mesh.VertexBuffer.Joints);
+                var color = AddAccessor<Vector4>(mesh.VertexBuffer.Colors);
 
                 var morphTargets = new MorphAccessor[] { };
                 if (mesh.MorphTargets != null)
@@ -99,13 +100,17 @@ namespace UniVRM10
                     gltfPrim.indices = AddAccessor(subIndices);
                     gltfPrim.attributes.POSITION = position.Value;
                     gltfPrim.attributes.NORMAL = normal.Value;
+                    gltfPrim.attributes.TANGENT = -1;
+                    gltfPrim.attributes.COLOR_0 = color.GetValueOrDefault(-1);
                     gltfPrim.attributes.TEXCOORD_0 = uv.Value;
+                    gltfPrim.attributes.TEXCOORD_1 = -1;
                     gltfPrim.attributes.WEIGHTS_0 = weights.GetValueOrDefault(-1);
                     gltfPrim.attributes.JOINTS_0 = joints.GetValueOrDefault(-1);
                     foreach (var (gltfMorph, morph) in Enumerable.Zip(gltfPrim.targets, morphTargets, (l, r) => (l, r)))
                     {
                         gltfMorph.POSITION = morph.Position.GetValueOrDefault(-1);
                         gltfMorph.NORMAL = morph.Normal.GetValueOrDefault(-1);
+                        gltfMorph.TANGENT = -1;
                     }
                 }
             }
diff --git a/Assets/VRM10/Runtime/Migration/MigrationVrmSpringBone.cs b/Assets/VRM10/Runtime/Migration/MigrationVrmSpringBone.cs
index 0a4760fc7..6e50bcc67 100644
--- a/Assets/VRM10/Runtime/Migration/MigrationVrmSpringBone.cs
+++ b/Assets/VRM10/Runtime/Migration/MigrationVrmSpringBone.cs
@@ -129,10 +129,13 @@ namespace UniVRM10
             // その差異に対応して、7cmの遠さに node を追加する。
             foreach (var x in sa["boneGroups"].ArrayItems())
             {
-                foreach (var y in x["bones"].ArrayItems())
+                if (x.ContainsKey("bones"))
                 {
-                    var joints = TraverseFirstChild(gltf.nodes, gltf.nodes[y.GetInt32()]).ToArray();
-                    AddTail7cm(gltf, joints);
+                    foreach (var y in x["bones"].ArrayItems())
+                    {
+                        var joints = TraverseFirstChild(gltf.nodes, gltf.nodes[y.GetInt32()]).ToArray();
+                        AddTail7cm(gltf, joints);
+                    }
                 }
             }
 
@@ -163,30 +166,33 @@ namespace UniVRM10
                 //     5
                 //   ]
                 // },
-                foreach (var y in x["bones"].ArrayItems())
+                if (x.ContainsKey("bones"))
                 {
-                    var comment = x.GetObjectValueOrDefault("comment", "");
-                    var spring = new UniGLTF.Extensions.VRMC_springBone.Spring
+                    foreach (var y in x["bones"].ArrayItems())
                     {
-                        Name = comment,
-                        ColliderGroups = x["colliderGroups"].ArrayItems().Select(z => z.GetInt32()).ToArray(),
-                        Joints = new List<UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint>(),
-                    };
-
-                    foreach (var z in TraverseFirstChild(gltf.nodes, gltf.nodes[y.GetInt32()]))
-                    {
-                        spring.Joints.Add(new UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint
+                        var comment = x.GetObjectValueOrDefault("comment", "");
+                        var spring = new UniGLTF.Extensions.VRMC_springBone.Spring
                         {
-                            Node = gltf.nodes.IndexOf(z),
-                            DragForce = x["dragForce"].GetSingle(),
-                            GravityDir = MigrateVector3.Migrate(x["gravityDir"]),
-                            GravityPower = x["gravityPower"].GetSingle(),
-                            HitRadius = x["hitRadius"].GetSingle(),
-                            Stiffness = x["stiffiness"].GetSingle(),
-                        });
-                    }
+                            Name = comment,
+                            ColliderGroups = x["colliderGroups"].ArrayItems().Select(z => z.GetInt32()).ToArray(),
+                            Joints = new List<UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint>(),
+                        };
 
-                    springBone.Springs.Add(spring);
+                        foreach (var z in TraverseFirstChild(gltf.nodes, gltf.nodes[y.GetInt32()]))
+                        {
+                            spring.Joints.Add(new UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint
+                            {
+                                Node = gltf.nodes.IndexOf(z),
+                                DragForce = x["dragForce"].GetSingle(),
+                                GravityDir = MigrateVector3.Migrate(x["gravityDir"]),
+                                GravityPower = x["gravityPower"].GetSingle(),
+                                HitRadius = x["hitRadius"].GetSingle(),
+                                Stiffness = x["stiffiness"].GetSingle(),
+                            });
+                        }
+
+                        springBone.Springs.Add(spring);
+                    }
                 }
             }
 
diff --git a/Assets/VRM10/Tests/MigrationTests.cs b/Assets/VRM10/Tests/MigrationTests.cs
index d3371eade..d06b496a2 100644
--- a/Assets/VRM10/Tests/MigrationTests.cs
+++ b/Assets/VRM10/Tests/MigrationTests.cs
@@ -198,13 +198,13 @@ namespace UniVRM10
 
             foreach (var gltf in EnumerateGltfFiles(root))
             {
-                var bytes = File.ReadAllBytes(gltf.FullName);
                 try
                 {
-                    var migrated = MigrationVrm.Migrate(bytes);
-                    var data = new GlbLowLevelParser(gltf.FullName, migrated).Parse();
-                    UniGLTF.Extensions.VRMC_vrm.GltfDeserializer.TryGet(data.GLTF.extensions, out UniGLTF.Extensions.VRMC_vrm.VRMC_vrm vrm);
-                    Assert.NotNull(vrm);
+                    Vrm10Data.TryParseOrMigrate(gltf.FullName, true, out Vrm10Data vrm);
+                    using (var loader = new Vrm10Importer(vrm))
+                    {
+                        loader.LoadAsync().Wait();
+                    }
                 }
                 catch (UnNormalizedException)
                 {