diff --git a/data_type/node/operator.py b/data_type/node/operator.py
new file mode 100644
index 0000000..3d775e5
--- /dev/null
+++ b/data_type/node/operator.py
@@ -0,0 +1,105 @@
+
+from pathlib import Path
+from datetime import datetime
+import subprocess
+
+from ...core.bl_utils import get_bl_cmd
+from ...core.lib_utils import get_asset_data
+from ...core.catalog import read_catalog
+from ... import constants
+
+import bpy
+from bpy.types import Operator
+from bpy.props import StringProperty, EnumProperty
+
+
+class ASSETLIB_OT_update_nodes(Operator):
+    bl_idname = 'assetlibrary.update_nodes'
+    bl_label = 'Update node'
+    bl_options = {"REGISTER", "UNDO"}
+
+    selection : EnumProperty(items=[(s, s.title(), '') for s in ('ALL', 'SELECTED', 'CURRENT')], default="CURRENT", name='All Nodes')
+
+    @classmethod
+    def poll(cls, context):
+        return context.space_data.edit_tree
+
+    def invoke(self, context, event):
+        return context.window_manager.invoke_props_dialog(self)
+
+    def execute(self, context):
+        asset_libraries = context.preferences.filepaths.asset_libraries
+
+        ntree = context.space_data.edit_tree
+        ntree_name = ntree.name
+        new_ntree = None
+
+        if self.selection == 'SELECTED':
+            nodes = [ n.node_tree for n in context.space_data.edit_tree.nodes 
+                                if n.type == "GROUP" and n.select]
+        elif self.selection == 'CURRENT':
+            active_node = context.space_data.edit_tree
+            nodes = [active_node]
+        else:
+            nodes = list(bpy.data.node_groups)
+        
+        node_names = set(n.name for n in nodes)
+
+        for asset_library in asset_libraries:
+            library_path = Path(asset_library.path)
+            blend_files = [fp for fp in library_path.glob("**/*.blend") if fp.is_file()]
+
+            node_groups = list(bpy.data.node_groups)# Storing original node_geoup to compare with imported
+
+            link = (asset_library.import_method == 'LINK')
+            for blend_file in blend_files:
+                print(blend_file)
+                with bpy.data.libraries.load(str(blend_file), assets_only=True, link=link) as (data_from, data_to):
+
+                    import_node_groups = [n for n in data_from.node_groups if n in node_names]
+                    print("import_node_groups", import_node_groups)
+                    data_to.node_groups = import_node_groups
+
+                    node_names -= set(import_node_groups) # Store already updated nodes
+
+                new_node_groups = set(n for n in bpy.data.node_groups if n not in node_groups)
+
+                for new_node_group in new_node_groups:
+                    new_node_group_name = new_node_group.library_weak_reference.id_name[2:]
+                    local_node_group = next((n for n in bpy.data.node_groups if n.name == new_node_group_name and n != new_node_group), None)
+
+                    if not local_node_group:
+                        print(f'No local node_group {new_node_group_name}')
+                        continue
+                    
+                    print(f'Merge node {local_node_group.name} into {new_node_group.name}')
+
+                    local_node_group.user_remap(new_node_group)
+                    new_node_group.interface_update(context)
+                    bpy.data.node_groups.remove(local_node_group)
+
+                    new_node_group.name = new_node_group_name
+                    new_node_group.asset_clear()
+
+
+        return {'FINISHED'}
+
+
+    def draw(self, context):
+        layout = self.layout
+        layout.prop(self, "selection", expand=True)
+
+
+bl_classes = (
+    ASSETLIB_OT_update_nodes,
+)
+
+
+def register():
+    for bl_class in bl_classes:
+        bpy.utils.register_class(bl_class)
+
+
+def unregister():
+    for bl_class in reversed(bl_classes):
+        bpy.utils.unregister_class(bl_class)