diff --git a/backend/app/main.py b/backend/app/main.py
index 3d37819..aa5e19a 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -204,7 +204,7 @@ def send_completed_inspection_to_n8n(inspection, db):
         # No lanzamos excepción para no interrumpir el flujo normal
 
 
-BACKEND_VERSION = "1.0.73"
+BACKEND_VERSION = "1.0.74"
 app = FastAPI(title="Checklist Inteligente API", version=BACKEND_VERSION)
 
 # S3/MinIO configuration
diff --git a/frontend/package.json b/frontend/package.json
index 1d103a8..44da8bc 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,7 +1,7 @@
 {
   "name": "checklist-frontend",
   "private": true,
-  "version": "1.0.73",
+  "version": "1.0.74",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/frontend/src/App.jsx b/frontend/src/App.jsx
index ddcc8c1..6933f57 100644
--- a/frontend/src/App.jsx
+++ b/frontend/src/App.jsx
@@ -1229,6 +1229,25 @@ function QuestionsManagerModal({ checklist, onClose }) {
 
   const handleDragOver = (e, question) => {
     e.preventDefault()
+    
+    // Validar que ambas preguntas sean del mismo nivel (padre-padre o hijo-hijo del mismo padre)
+    if (draggedQuestion) {
+      const draggedIsChild = !!draggedQuestion.parent_question_id
+      const targetIsChild = !!question.parent_question_id
+      
+      // No permitir mezclar niveles
+      if (draggedIsChild !== targetIsChild) {
+        e.dataTransfer.dropEffect = 'none'
+        return
+      }
+      
+      // Si son hijos, deben ser del mismo padre
+      if (draggedIsChild && draggedQuestion.parent_question_id !== question.parent_question_id) {
+        e.dataTransfer.dropEffect = 'none'
+        return
+      }
+    }
+    
     e.dataTransfer.dropEffect = 'move'
     setDragOverQuestion(question)
   }
@@ -1245,8 +1264,38 @@ function QuestionsManagerModal({ checklist, onClose }) {
       setDragOverQuestion(null)
       return
     }
+    
+    // Validar que sean del mismo nivel
+    const draggedIsChild = !!draggedQuestion.parent_question_id
+    const targetIsChild = !!targetQuestion.parent_question_id
+    
+    if (draggedIsChild !== targetIsChild) {
+      alert('⚠️ Solo puedes reordenar preguntas del mismo nivel')
+      setDraggedQuestion(null)
+      setDragOverQuestion(null)
+      return
+    }
+    
+    // Si son hijos, validar que sean del mismo padre
+    if (draggedIsChild && draggedQuestion.parent_question_id !== targetQuestion.parent_question_id) {
+      alert('⚠️ Solo puedes reordenar subpreguntas del mismo padre')
+      setDraggedQuestion(null)
+      setDragOverQuestion(null)
+      return
+    }
 
-    const questionsList = Object.values(questionsBySection).flat()
+    // Filtrar solo las preguntas del mismo nivel/grupo
+    let questionsList
+    if (draggedIsChild) {
+      // Solo subpreguntas del mismo padre
+      questionsList = questions.filter(q => 
+        q.parent_question_id === draggedQuestion.parent_question_id
+      )
+    } else {
+      // Solo preguntas padre (sin parent_question_id)
+      questionsList = questions.filter(q => !q.parent_question_id)
+    }
+    
     const draggedIndex = questionsList.findIndex(q => q.id === draggedQuestion.id)
     const targetIndex = questionsList.findIndex(q => q.id === targetQuestion.id)
     
@@ -1255,7 +1304,7 @@ function QuestionsManagerModal({ checklist, onClose }) {
     const [movedQuestion] = newList.splice(draggedIndex, 1)
     newList.splice(targetIndex, 0, movedQuestion)
     
-    // Preparar datos para el backend
+    // Preparar datos para el backend (solo las preguntas afectadas)
     const reorderData = newList.map((q, index) => ({
       question_id: q.id,
       new_order: index