diff --git a/addform.html b/addform.html
index 42deb88..e22a4cb 100644
--- a/addform.html
+++ b/addform.html
@@ -1326,6 +1326,11 @@ var toolbarOptions = [
 	
 <script>
 
+	// $('#Question_title').keyup(function(){
+	// 	var question_paper_title = document.getElementById('Question_title').querySelector('.ql-editor').innerHTML;
+	// 	console.log('question_paper_title : ', question_paper_title);
+	// })
+
 $("#overlay").show();
 
 $('#workarea_math').click(function(){
@@ -1343,7 +1348,7 @@ $(document).on("click", function (event) {
 	const targetElement = event.target;
 	var tragetedId = event.target.id.startsWith("ML");
 	const classList = Array.from(event.target.classList);
-	const hasMLKClass = classList.some(className => className.startsWith("MLK") || className.startsWith("row") || className.startsWith("left") || className.startsWith("ML") || className.startsWith("action"));
+	const hasMLKClass = classList.some(className => className.startsWith("MLK") || className.startsWith("row") || className.startsWith("left") || className.startsWith("ML") || className.startsWith("action") || className.startsWith("loaded"));
 	const isSvgElement = targetElement.closest('svg') || targetElement.closest('i');
 	// console.log('svg',isSvgElement);
 	// console.log(hasMLKClass);
@@ -1479,6 +1484,7 @@ $(document).on("click", function (event) {
 });
 
 
+//function for prevent default
 document.addEventListener('DOMContentLoaded', function () {
 	const scrollToTopBtn = document.getElementById('SaveButton');
 	const scrollToTopBtn2 = document.getElementById('SaveButton2');
@@ -2367,6 +2373,9 @@ inputFields.forEach(inputField => {
 					navpane();
 					check_Remove_Empty_Question(sectionID);
 
+					const targetId = 'section_title_text_' + sectionRandomID; 
+					localStorage.setItem('savePreventDefault', targetId)
+
 				});
 
                 var DisplayMark_RawID = 'Section_Display_Marks_Id_' + sectionRandomID
@@ -2408,13 +2417,11 @@ navpane();
 
 //function for new section add to go that section prevent default
 var EditScroll = localStorage.getItem('scroll')
-// console.log(EditScroll);
+const targetId = 'section_title_text_' + sectionRandomID; 
+localStorage.setItem('savePreventDefault', targetId)
 if(EditScroll !== '1' && scrollval == false)
-
 {
 	
-const targetId = 'section_title_text_' + sectionRandomID; 
-// console.log(targetId);
 scrollToElementWithoutLink(targetId);
 
 }
@@ -2731,6 +2738,9 @@ inputElement.addEventListener("keyup", function(event) {
 	check_Remove_Empty_Question(question_groupid);
 	// SetQuestionGroupTitle(QuestionGroup_ID, QuestionGroup_ID)
 
+	const targetId = 'subSection_title_text_' + QuestionGroup_ID; 
+	localStorage.setItem('savePreventDefault', targetId);
+
 });
 
 var question_groupi = 'Questions_Group_id_'+ QuestionGroup_ID;
@@ -2823,12 +2833,12 @@ markCalculation()
 				// end of find QG level script
 
 //function for new QuestionGroup add scroll to the QuestionGroup prevent default
-var EditScroll = localStorage.getItem('scroll')
-if(EditScroll !== '1')
-
-{
+var EditScroll = localStorage.getItem('scroll');
 const targetId = 'subSection_title_text_' + QuestionGroup_ID; 
-scrollToElementWithoutLink(targetId);
+localStorage.setItem('savePreventDefault', targetId);
+if(EditScroll !== '1')
+{
+	scrollToElementWithoutLink(targetId);
 }
 
 		
@@ -3472,9 +3482,10 @@ markCalculation();
 
 //function for new ChoiceQuestion add scroll to the ChoiceQuestion prevent default
 var EditScroll = localStorage.getItem('scroll')
+const targetId = 'textQuestionName_' + addChoiceAreaId; 
+localStorage.setItem('savePreventDefault', targetId)
 if(EditScroll !== '1')
 {
-const targetId = 'textQuestionName_' + addChoiceAreaId; 
 scrollToElementWithoutLink(targetId);
 }
 	const arrayString = JSON.stringify(array_of_Id);
@@ -4087,7 +4098,7 @@ var tempQuestionTitle = inputElement.querySelector('.ql-editor').innerHTML;
 		clearSidebarWrapper();
 		navpane();
 		check_Remove_Empty_Question(Textid);
-    	// SetQuestionGroupTitle(QuestionGroup_ID,addTextQuestionId)
+		localStorage.setItem('savePreventDefault', Textid)
 
 
 
@@ -4125,17 +4136,15 @@ var tempQuestionTitle = inputElemen.innerHTML;
 
 //function for new TextQuestion add scroll to the TextQuestion prevent default
 
-var EditScroll = localStorage.getItem('scroll')
-// console.log(EditScroll);
+var EditScroll = localStorage.getItem('scroll');
+const targetId = 'textQuestionName_' + addTextQuestionId; 
+localStorage.setItem('savePreventDefault', targetId)
 if(EditScroll !== '1')
 {
-	const targetId = 'textQuestionName_' + addTextQuestionId; 
     scrollToElementWithoutLink(targetId);
 }
 
-// console.log(array_of_Id);
 const arrayString = JSON.stringify(array_of_Id);
-// console.log(arrayString);
 collect_Empty_Question_Id(arrayString, Textid);
 
 
@@ -4245,7 +4254,7 @@ function check_Empty_Question()
 		 if (index === array.length - 1) {
 		var idclass= document.getElementById(Id).className;
 		// console.log(idclass == "QuestionTextIdSet SerialNo");
-		if ( idclass === 'QuestionTextIdSet SerialNo' || idclass === 'QuestionsGroupIdset' || idclass === 'QuestionChoiceId SerialNo' ) {
+		if ( idclass === 'QuestionTextIdSet SerialNo' || idclass === 'QuestionsGroupIdset SerialNo' || idclass === 'QuestionChoiceId SerialNo' ) {
 			attrId = document.getElementById(Id).innerHTML
 		}else if(idclass === 'multipleAnswerorNot'){ 
 			attrId ="";
@@ -4261,7 +4270,6 @@ function check_Empty_Question()
 			document.getElementById(Id).focus();
 		}else if(attrId == ''){
 			// console.log("Check empty  else if");
-
 			scrollToElementWithoutLink(Id);
 			document.getElementById(Id).focus();
 		}
@@ -4280,9 +4288,7 @@ function check_Empty_Question()
 function check_Remove_Empty_Question(IdToRemove , DeleteElement=0) {
 //   console.log('IdToRemove : ', IdToRemove);
 
-
-  
-	var attrId;
+  var attrId;
   var title_id = localStorage.getItem('JSON_FOR_EMPTY_QUESTION');
   var attrId= '';
 
@@ -4386,9 +4392,17 @@ array_of_Id=againpushlist;
 }
 
 
+function saveScrollPosition() {
+	localStorage.setItem('scrollLocation', window.scrollY);
+}
 
-
-
+function loadScrollPosition() {
+	const savedScrollPosition = localStorage.getItem('scrollLocation');
+	if (savedScrollPosition !== null) {
+		window.scrollTo(0, savedScrollPosition);
+	}
+}
+window.addEventListener('scroll', saveScrollPosition);
 
 
 //function for Questions REORDER in the SECTION Level
@@ -4477,14 +4491,24 @@ function ReArrangeQuestionsGroup(e){
 	navpane();
 }
 
+function scrollElement(elementId){
+
+	console.log('auto redirect ');
+	console.log(elementId);
+	const element = document.getElementById(elementId);
+	console.log(element);
+	element.scrollIntoView({ behavior: "smooth", block: "center" });
+}
+
 //function for Add a new secton, questiongroup and Questions to scroll to go that place
 function scrollToElementWithoutLink(elementId) {
-	// console.log(elementId);
+	console.log('scrollToElementWithoutLink');
+	console.log(elementId);
 	var modifiedA = elementId.replace(/\d/g, '');
-
+	console.log(modifiedA);
     const element = document.getElementById(elementId);
     if (element) {
-		// console.log(element);
+		console.log('true');
 		element.scrollIntoView({ behavior: "smooth", block: "center" });
 		if (modifiedA == 'removeAndCloneQroupQuestion_') {
 		// alert('Please Choose the Correct Answer')
@@ -4675,6 +4699,7 @@ function removeSection(RandomId, IndexValue) {
 // remove the Question Group type questions function
 function removeQuestionGroup(index) {
 
+
 	var element = document.getElementById('draggedGroup_'+ index);
 	Swal.fire({
 	title: 'Are you sure to Delete this Question Group?',
@@ -4691,15 +4716,23 @@ function removeQuestionGroup(index) {
 		check_Remove_Empty_Question(GroupQuestionTitle,1);
 		var GroupQuestionSerialNo = 'Questions_Group_id_'+index;
 		check_Remove_Empty_Question(GroupQuestionSerialNo,1);
-
-			element.remove();
+		element.remove();
+            
+		    
+			var myArray = localStorage.getItem('JSON_FOR_EMPTY_QUESTION');
+			// array_of_Id = [];
+            // localStorage.setItem('JSON_FOR_EMPTY_QUESTION', array_of_Id);
+			if(myArray !== null && myArray !== undefined){
+				var idOfArray = removeNonExistentIds(myArray)
+				localStorage.setItem('JSON_FOR_EMPTY_QUESTION', JSON.stringify(idOfArray));
+				console.log('localstorage values : ', localStorage.getItem('JSON_FOR_EMPTY_QUESTION'));
+			}
 			json2nav();
 			clearSidebarWrapper();
 			navpane();
 		}
 	}
 	})
-	// console.log('o;ijkom');
 	
 }
 
@@ -4711,6 +4744,27 @@ const text = $.text();
 return text;
 }
 
+
+// Function to remove non-existent IDs from the array
+function removeNonExistentIds(arrayOfIds) {
+
+    arrayOfIds = JSON.parse(arrayOfIds);
+    console.log('Before removal:', arrayOfIds);
+
+    if (arrayOfIds !== null) {
+        // Filter out IDs that don't exist in the HTML content
+        arrayOfIds = arrayOfIds.filter(function(id) {
+            return document.getElementById(id);
+        });
+         
+		// return JSON.stringify(arrayOfIds);
+		return arrayOfIds;
+        // array_of_Id.push(arrayOfIds);
+    }
+
+    // console.log('After removal:', arrayOfIds);
+}
+
 </script>
 
 
diff --git a/json2html.js b/json2html.js
index 0d0f5c1..58c9ef2 100644
--- a/json2html.js
+++ b/json2html.js
@@ -88,6 +88,10 @@ function jsonToHtml(jsonData) {
 	localStorage.removeItem('EditNavExpend');
 	localStorage.removeItem('json_Decode_Data_For_Mcq_Crt_Ans');
 	$("#overlay").hide();
+	loadScrollPosition()
+	setTimeout(function() {
+		loadScrollPosition()
+    }, 500);
 
 }
 
diff --git a/main.js b/main.js
index 35aee66..8cbf379 100644
--- a/main.js
+++ b/main.js
@@ -127,10 +127,18 @@ function buildCustomMenu() {
           },
         },
         {
-          role: 'undo',
+          label: 'Undo',
+          accelerator: 'CmdOrCtrl+Z',
+          click: () => {
+            mainWindow.webContents.undo();
+          },
         },
         {
-          role: 'redo',
+          label: 'Redo',
+          accelerator: 'CmdOrCtrl+Shift+Z',
+          click: () => {
+            mainWindow.webContents.redo();
+          },
         },
       ].filter(Boolean),
     },
diff --git a/nav_pane.js b/nav_pane.js
index f0359a4..463401b 100644
--- a/nav_pane.js
+++ b/nav_pane.js
@@ -213,7 +213,7 @@ function navpane() {
                 }
     
                 sectionDiv.style.backgroundColor ='#fcdddd';
-                sectionDiv.style.border = '5px solid #fcdddd';
+                // sectionDiv.style.border = '5px solid #fcdddd';
                 sectionDiv.style.color ='black';
                 sectionDiv.style.marginLeft ='-67px';
                 sectionDiv.style.paddingLeft='67px';
@@ -251,7 +251,7 @@ function navpane() {
                     }
 
                     sectionDiv.style.backgroundColor ='#fcdddd';
-                    sectionDiv.style.border = '5px solid #fcdddd';
+                    // sectionDiv.style.border = '5px solid #fcdddd';
                     sectionDiv.style.borderRadius = '5px';
                     sectionDiv.style.color ='black';
                     sectionDiv.style.marginLeft ='-67px';
@@ -294,6 +294,8 @@ function navpane() {
     function createTreeNode(nodeData, parentNode) {
         const nodeDiv = document.createElement('div');
         nodeDiv.className = "navContain";
+        nodeDiv.classList.add('navDrag');
+
         // nodeDiv.id = nodeData.textQuestion_Id || nodeData.choice_question_id;
         const nodeDataId = nodeData.question_Id
         const nodeDataType = nodeData.question_type
@@ -393,18 +395,18 @@ function navpane() {
                 // questionLink.style.fontWeight = '500';
                 // nodeDiv.style.fontWeight = '500';
                 nodeDiv.style.backgroundColor ='#fcdddd';
-                nodeDiv.style.border = '5px solid #fcdddd';
+                // nodeDiv.style.border = '5px solid #fcdddd';
                 nodeDiv.style.borderRadius = '5px';
                 nodeDiv.style.color ='black';
                 nodeDiv.style.marginLeft ='-67px';
                 nodeDiv.style.paddingLeft='67px';
                 nodeDiv.style.marginRight= '-75px'
-                    QuestionID.style.fontWeight = '100';
-                    currentlyHighlightedElement = nodeDiv;
-                    // nodeDiv.scrollIntoView({ behavior: 'smooth', block: 'start' });
-                    var a=nodeDiv.querySelector('a').href
-                    var aa=a.split('#')[1];
-                    // scrollToElement(aa)
+                QuestionID.style.fontWeight = '100';
+                currentlyHighlightedElement = nodeDiv;
+                // nodeDiv.scrollIntoView({ behavior: 'smooth', block: 'start' });
+                var a=nodeDiv.querySelector('a').href
+                var aa=a.split('#')[1];
+                // scrollToElement(aa)
 
             });
 
@@ -460,7 +462,7 @@ function navpane() {
                 // questionLink.style.color = ' rgb(255 255 255)';
                 // nodeDiv.style.fontWeight = '500';
                 nodeDiv.style.backgroundColor = '#fcdddd';
-                nodeDiv.style.border = '5px solid #fcdddd';
+                // nodeDiv.style.border = '5px solid #fcdddd';
                 nodeDiv.style.borderRadius = '5px';
                 // nodeDiv.style.color = ' rgb(255 255 255)';
                 nodeDiv.style.color ='black';
@@ -647,7 +649,7 @@ function navpane() {
                 groupQuestionLink.style.color= 'black';
                 groupTitleDiv.style.color='black';
                 groupTitleDiv.style.fontWeight = '100';
-                groupTitleDiv.style.border = '5px solid #fcdddd';
+                // groupTitleDiv.style.border = '5px solid #fcdddd';
                 groupTitleDiv.style.borderRadius = '5px';
               groupTitleDiv.style.backgroundColor = '#fcdddd';
               groupTitleDiv.style.marginLeft ='-67px';
@@ -821,4 +823,34 @@ function navpane() {
         if (element) {
             element.scrollIntoView({ behavior: "smooth", block: "center" });
         }
-    }
\ No newline at end of file
+    }
+
+
+    let draggedItemGroup = null;
+    let draggedItemQuestion = null;
+    let dropTarget = null;
+
+	// Event listener for .drag-handle elements within questions
+	document.addEventListener('mousedown', function (e) {
+        
+		const dragHandle = e.target.closest('.content visible');
+		// alert(dragHandle);
+		if (dragHandle) {
+			// If the click is inside a drag handle, find the corresponding .question
+			const questionElement = dragHandle.closest('.navDrag');
+
+			if (questionElement) {
+				// console.log("draggHandle:",dragHandle);
+				// Initiate the drag operation for the .question
+				draggedItemQuestion = questionElement;
+
+				// Add a dragStart event listener to set data
+				draggedItemQuestion.addEventListener('dragstart', function (e) {
+					e.dataTransfer.setData('text/plain', draggedItemQuestion.id);
+					// console.log(draggedItemQuestion.id);
+					
+					
+				});
+			}
+		}
+	});
\ No newline at end of file
diff --git a/savexml.js b/savexml.js
index 9169e50..d1ef842 100644
--- a/savexml.js
+++ b/savexml.js
@@ -76,7 +76,7 @@ files.forEach((file) => {
       } else {
         console.log('JSON file saved successfully.');
 
-        localStorage.clear();
+        // localStorage.clear();
 
       }
     }); 
@@ -85,7 +85,7 @@ files.forEach((file) => {
  
 
 
-    localStorage.clear();
+    // localStorage.clear();
     if(reorder){
       window.location.reload();
     }else{