diff --git a/src/composables/useCoreCommands.ts b/src/composables/useCoreCommands.ts
index a9b643b0e..824bd04d9 100644
--- a/src/composables/useCoreCommands.ts
+++ b/src/composables/useCoreCommands.ts
@@ -716,8 +716,26 @@ export function useCoreCommands(): ComfyCommand[] {
       icon: 'pi pi-objects-column',
       label: 'Custom Nodes (Beta)',
       versionAdded: '1.12.10',
-      function: () => {
-        dialogService.toggleManagerDialog()
+      function: async () => {
+        const isLegacyManagerUI =
+          await useComfyManagerService().isLegacyManagerUI()
+        if (isLegacyManagerUI) {
+          try {
+            await useCommandStore().execute(
+              'Comfy.Manager.Menu.ToggleVisibility' // This command is registered by legacy manager FE extension
+            )
+          } catch (error) {
+            useToastStore().add({
+              severity: 'error',
+              summary: t('g.error'),
+              detail: t('manager.legacyMenuNotAvailable'),
+              life: 3000
+            })
+            dialogService.showManagerDialog()
+          }
+        } else {
+          dialogService.showManagerDialog()
+        }
       }
     },
     {
diff --git a/src/constants/coreMenuCommands.ts b/src/constants/coreMenuCommands.ts
index 4c19c622b..30ff2768c 100644
--- a/src/constants/coreMenuCommands.ts
+++ b/src/constants/coreMenuCommands.ts
@@ -13,14 +13,7 @@ export const CORE_MENU_COMMANDS = [
   ],
   [['Edit'], ['Comfy.Undo', 'Comfy.Redo']],
   [['Edit'], ['Comfy.OpenClipspace']],
-  [
-    ['Manager'],
-    [
-      'Comfy.Manager.CustomNodesManager.ShowCustomNodesMenu',
-      'Comfy.Manager.ShowLegacyManagerMenu',
-      'Comfy.Manager.CustomNodesManager.ShowLegacyCustomNodesMenu'
-    ]
-  ],
+  [['Manager'], ['Comfy.Manager.CustomNodesManager.ShowCustomNodesMenu']],
   [
     ['Help'],
     [
diff --git a/src/locales/en/main.json b/src/locales/en/main.json
index 4114f405d..931cc0abe 100644
--- a/src/locales/en/main.json
+++ b/src/locales/en/main.json
@@ -154,7 +154,7 @@
   },
   "manager": {
     "title": "Custom Nodes Manager",
-    "legacyMenuNotAvailable": "Legacy manager menu is not available in this version of ComfyUI. Please use the new manager menu instead.",
+    "legacyMenuNotAvailable": "Legacy manager menu is not available, defaulting to the new manager menu.",
     "failed": "Failed ({count})",
     "noNodesFound": "No nodes found",
     "noNodesFoundDescription": "The pack's nodes either could not be parsed, or the pack is a frontend extension only and doesn't have any nodes.",
diff --git a/src/services/comfyManagerService.ts b/src/services/comfyManagerService.ts
index 17fc9eb44..0e8f245ac 100644
--- a/src/services/comfyManagerService.ts
+++ b/src/services/comfyManagerService.ts
@@ -32,7 +32,8 @@ enum ManagerRoute {
   GET_NODES = 'v2/customnode/getmappings',
   GET_PACKS = 'v2/customnode/getlist',
   IMPORT_FAIL_INFO = 'v2/customnode/import_fail_info',
-  REBOOT = 'v2/manager/reboot'
+  REBOOT = 'v2/manager/reboot',
+  IS_LEGACY_MANAGER_UI = 'v2/manager/is_legacy_manager_ui'
 }
 
 const managerApiClient = axios.create({
@@ -247,6 +248,15 @@ export const useComfyManagerService = () => {
     )
   }
 
+  const isLegacyManagerUI = async (signal?: AbortSignal) => {
+    const errorContext = 'Checking if user set Manager to use the legacy UI'
+
+    return executeRequest<boolean>(
+      () => managerApiClient.get(ManagerRoute.IS_LEGACY_MANAGER_UI, { signal }),
+      { errorContext }
+    )
+  }
+
   return {
     // State
     isLoading,
@@ -268,6 +278,7 @@ export const useComfyManagerService = () => {
     updateAllPacks,
 
     // System operations
-    rebootComfyUI
+    rebootComfyUI,
+    isLegacyManagerUI
   }
 }