diff --git a/app/Controllers/Admin/Menu.php b/app/Controllers/Admin/Menu.php
index d5be849..de426c1 100644
--- a/app/Controllers/Admin/Menu.php
+++ b/app/Controllers/Admin/Menu.php
@@ -32,20 +32,21 @@ class Menu extends BaseController
         $types = $this->typeModel->orderBy('mt_sort', 'ASC')->findAll();
         $requestedMtIdx = (int) ($this->request->getGet('mt_idx') ?? 0);
         $mtIdx = $this->resolveMtIdx($requestedMtIdx, $types);
+        $effectiveMtIdx = $mtIdx;
         $debugMode = $this->request->getGet('debug') === '1';
         $fallbackApplied = false;
-        $list = $mtIdx > 0 ? $this->menuModel->getAllByType($mtIdx, $lgIdx) : [];
+        $list = $effectiveMtIdx > 0 ? $this->menuModel->getAllByType($effectiveMtIdx, $lgIdx) : [];
         $currentType = $mtIdx > 0 ? $this->typeModel->find($mtIdx) : null;
         $currentTypeCode = (string) ($currentType->mt_code ?? '');
 
         // 현재 지자체에 메뉴가 없으면, mt_idx별로 기본 지자체(lg_idx=1)의 메뉴를 한 번 복사한다.
-        if ($mtIdx > 0 && empty($list)) {
-            $this->menuModel->copyDefaultsFromLg($mtIdx, 1, $lgIdx);
-            $list = $this->menuModel->getAllByType($mtIdx, $lgIdx);
+        if ($effectiveMtIdx > 0 && empty($list)) {
+            $this->menuModel->copyDefaultsFromLg($effectiveMtIdx, 1, $lgIdx);
+            $list = $this->menuModel->getAllByType($effectiveMtIdx, $lgIdx);
         }
 
         // 운영 DB 불일치 대응: site 타입인데 mt_idx 매핑이 어긋난 경우(예: menu_type=2, menu는 4 사용)
-        if (empty($list) && $currentTypeCode === 'site' && $mtIdx !== 4) {
+        if (empty($list) && $currentTypeCode === 'site' && $effectiveMtIdx !== 4) {
             $fallbackMtIdx = 4;
             $fallbackList = $this->menuModel->getAllByType($fallbackMtIdx, $lgIdx);
             if (empty($fallbackList)) {
@@ -53,7 +54,7 @@ class Menu extends BaseController
                 $fallbackList = $this->menuModel->getAllByType($fallbackMtIdx, $lgIdx);
             }
             if (! empty($fallbackList)) {
-                $mtIdx = $fallbackMtIdx;
+                $effectiveMtIdx = $fallbackMtIdx;
                 $list = $fallbackList;
                 $fallbackApplied = true;
             }
@@ -78,6 +79,7 @@ class Menu extends BaseController
                     'lg_idx'           => $lgIdx,
                     'requested_mt_idx' => $requestedMtIdx,
                     'resolved_mt_idx'  => $mtIdx,
+                    'effective_mt_idx' => $effectiveMtIdx,
                     'resolved_mt_code' => $currentTypeCode,
                     'list_count'       => count($list),
                     'fallback_applied' => $fallbackApplied ? 'Y' : 'N',
diff --git a/app/Views/admin/menu/index.php b/app/Views/admin/menu/index.php
index f3fc34e..3f0cfb9 100644
--- a/app/Views/admin/menu/index.php
+++ b/app/Views/admin/menu/index.php
@@ -52,6 +52,7 @@ $adminMenuListResolveHref = static function (string $rawLink) use ($adminMenusNa
   lg_idx=<?= esc((string) ($debugInfo['lg_idx'] ?? '')) ?>,
   requested_mt_idx=<?= esc((string) ($debugInfo['requested_mt_idx'] ?? '')) ?>,
   resolved_mt_idx=<?= esc((string) ($debugInfo['resolved_mt_idx'] ?? '')) ?>,
+  effective_mt_idx=<?= esc((string) ($debugInfo['effective_mt_idx'] ?? '')) ?>,
   resolved_mt_code=<?= esc((string) ($debugInfo['resolved_mt_code'] ?? '')) ?>,
   list_count=<?= esc((string) ($debugInfo['list_count'] ?? '')) ?>,
   fallback_applied=<?= esc((string) ($debugInfo['fallback_applied'] ?? 'N')) ?>