diff --git a/api/src/utils/content-type-creator.utils.ts b/api/src/utils/content-type-creator.utils.ts
index 9bc51d83a..a4b2ab3f0 100644
--- a/api/src/utils/content-type-creator.utils.ts
+++ b/api/src/utils/content-type-creator.utils.ts
@@ -200,7 +200,7 @@ function buildFieldSchema(item: any, marketPlacePath: string, parentUid = ''): a
       data_type: "group",
       display_name: item?.display_name || rawUid,  // Keep original for display
       field_metadata: {},
-      schema: groupSchema,
+      schema: removeDuplicateFields(groupSchema),
       uid: itemUid,  // Snake case uid
       multiple: item?.advanced?.multiple || false,
       mandatory: item?.advanced?.mandatory || false,
@@ -237,7 +237,7 @@ function getLastSegmentNew(str: string, separator: string): string {
   return segments[segments.length - 1].trim();
 }
 
-export function buildSchemaTree(fields: any[], parentUid = '', parentType = ''): any[] {
+export function buildSchemaTree(fields: any[], parentUid = '', parentType = '', oldParentUid = ''): any[] {
 
   if (!Array.isArray(fields)) {
     console.warn('buildSchemaTree called with invalid fields:', fields);
@@ -245,32 +245,42 @@ export function buildSchemaTree(fields: any[], parentUid = '', parentType = ''):
   }
   // Build a lookup map for O(1) access
   const fieldMap = new Map<string, any>();
-  fields.forEach(f => {
-    if (f.contentstackFieldUid) {
-      fieldMap.set(f.contentstackFieldUid, f);
+  fields?.forEach(f => {
+    if (f?.contentstackFieldUid) {
+      fieldMap?.set(f?.contentstackFieldUid, f);
     }
   });
 
   // Filter direct children of current parent
   const directChildren = fields.filter(field => {
-    const fieldUid = field.contentstackFieldUid || '';
+    const fieldUid = field?.contentstackFieldUid || '';
 
     if (!parentUid) {
       // Root level - only fields without dots
-      return fieldUid && !fieldUid.includes('.');
+      return fieldUid && !fieldUid?.includes('.');
     }
 
-    // Check if direct child of parent
-    if (!fieldUid.startsWith(parentUid + '.')) return false;
+    // Check if field is a direct child of parentUid
+    if (fieldUid?.startsWith(parentUid + '.')) {
+      const remainder = fieldUid?.substring(parentUid.length + 1);
+      // Verify it's exactly one level deeper (no more dots in remainder)
+      return remainder && !remainder?.includes('.');
+    }
+
+    // Fallback: check if field is a direct child of oldPrentUid (if provided and different)
+    if (oldParentUid && oldParentUid !== parentUid && fieldUid?.startsWith(oldParentUid + '.')) {
+      const remainder = fieldUid?.substring(oldParentUid.length + 1);
+      // Verify it's exactly one level deeper (no more dots in remainder)
+      return remainder && !remainder?.includes('.');
+    }
 
-    // Verify it's exactly one level deeper
-    const remainder = fieldUid.substring(parentUid.length + 1);
-    return remainder && !remainder.includes('.');
+    // Not a direct child
+    return false;
   });
 
   return directChildren.map(field => {
-    const uid = getLastSegmentNew(field.contentstackFieldUid, '.');
-    const displayName = field.display_name || getLastSegmentNew(field.contentstackField || '', '>').trim();
+    const uid = getLastSegmentNew(field?.contentstackFieldUid, '.');
+    const displayName = field?.display_name || getLastSegmentNew(field?.contentstackField || '', '>').trim();
 
     // Base field structure
     const result: any = {
@@ -280,14 +290,29 @@ export function buildSchemaTree(fields: any[], parentUid = '', parentType = ''):
     };
 
     // Determine if field should have nested schema
-    const fieldUid = field.contentstackFieldUid;
-    const fieldType = field.contentstackFieldType;
-
-    // Check if this field has children
-    const hasChildren = fields.some(f =>
-      f.contentstackFieldUid &&
-      f.contentstackFieldUid.startsWith(fieldUid + '.')
-    );
+    const fieldUid = field?.contentstackFieldUid;
+    const fieldType = field?.contentstackFieldType;
+    const oldFieldUid = field?.backupFieldUid;
+    
+    // Check if this field has direct children (exactly one level deeper)
+    const hasChildren = fields.some(f => {
+      const fUid = f?.contentstackFieldUid || '';
+      if (!fUid) return false;
+      
+      // Check if field starts with current fieldUid and is exactly one level deeper
+      if (fieldUid && fUid?.startsWith(fieldUid + '.')) {
+        const remainder = fUid?.substring(fieldUid.length + 1);
+        return remainder && !remainder?.includes('.');
+      }
+      
+      // Check if field starts with oldFieldtUid and is exactly one level deeper
+      if (oldFieldUid && fUid?.startsWith(oldFieldUid + '.')) {
+        const remainder = fUid?.substring(oldFieldUid.length + 1);
+        return remainder && !remainder?.includes('.');
+      }
+      
+      return false;
+    });
 
     if (hasChildren) {
       if (fieldType === 'modular_blocks') {
@@ -307,13 +332,13 @@ export function buildSchemaTree(fields: any[], parentUid = '', parentType = ''):
             ...child,
             uid: childUid,
             display_name: childDisplay,
-            schema: buildSchemaTree(fields, child.contentstackFieldUid, 'modular_blocks_child')
+            schema: buildSchemaTree(fields, child.contentstackFieldUid, 'modular_blocks_child', child?.backupFieldUid)
           };
         });
       } else if (fieldType === 'group' ||
         (fieldType === 'modular_blocks_child' && hasChildren)) {
         // Recursively build schema for groups and modular block children with nested content
-        result.schema = buildSchemaTree(fields, fieldUid, fieldType);
+        result.schema = buildSchemaTree(fields, fieldUid, fieldType, oldFieldUid);
       }
     }
 
@@ -996,7 +1021,7 @@ const mergeTwoCts = async (ct: any, mergeCts: any) => {
           group?.push(fieldGp);
         }
       }
-      field.schema = [...field?.schema ?? [], ...group];
+      field.schema = removeDuplicateFields([...field?.schema ?? [], ...group]);
     }
   }
   ctData.schema = await mergeArrays(ctData?.schema, mergeCts?.schema) ?? [];
@@ -1022,7 +1047,7 @@ export const contenTypeMaker = async ({ contentType, destinationStackId, project
 
   // Safe: ensures we never pass undefined to the builder
   const ctData: any[] = buildSchemaTree(contentType?.fieldMapping || []);
-
+  
   // Use the deep converter that properly handles groups & modular blocks
   for (const item of ctData) {
     if (item?.isDeleted === true) continue;