diff --git a/v2rayN/ServiceLib/Handler/ConfigHandler.cs b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
index 2c6428d6..33a5c52a 100644
--- a/v2rayN/ServiceLib/Handler/ConfigHandler.cs
+++ b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
@@ -1098,7 +1098,7 @@ public static class ConfigHandler
             await SQLiteHelper.Instance.ReplaceAsync(profileItem);
             if (profileGroupItem != null)
             {
-                profileGroupItem.ParentIndexId = profileItem.IndexId;
+                profileGroupItem.IndexId = profileItem.IndexId;
                 await ProfileGroupItemManager.Instance.SaveItemAsync(profileGroupItem);
             }
             else
@@ -1233,7 +1233,7 @@ public static class ConfigHandler
         {
             ChildItems = childProfileIndexId,
             MultipleLoad = multipleLoad,
-            ParentIndexId = indexId,
+            IndexId = indexId,
         };
         var ret = await AddGroupServerCommon(config, profile, profileGroup, true);
         result.Success = ret == 0;
diff --git a/v2rayN/ServiceLib/Manager/AppManager.cs b/v2rayN/ServiceLib/Manager/AppManager.cs
index 08e96857..c66f76df 100644
--- a/v2rayN/ServiceLib/Manager/AppManager.cs
+++ b/v2rayN/ServiceLib/Manager/AppManager.cs
@@ -208,13 +208,13 @@ public sealed class AppManager
         return await SQLiteHelper.Instance.TableAsync<ProfileItem>().FirstOrDefaultAsync(it => it.Remarks == remarks);
     }
 
-    public async Task<ProfileGroupItem?> GetProfileGroupItem(string parentIndexId)
+    public async Task<ProfileGroupItem?> GetProfileGroupItem(string indexId)
     {
-        if (parentIndexId.IsNullOrEmpty())
+        if (indexId.IsNullOrEmpty())
         {
             return null;
         }
-        return await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().FirstOrDefaultAsync(it => it.ParentIndexId == parentIndexId);
+        return await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().FirstOrDefaultAsync(it => it.IndexId == indexId);
     }
 
     public async Task<List<RoutingItem>?> RoutingItems()
diff --git a/v2rayN/ServiceLib/Manager/ProfileGroupItemManager.cs b/v2rayN/ServiceLib/Manager/ProfileGroupItemManager.cs
index 745186c2..09e6461f 100644
--- a/v2rayN/ServiceLib/Manager/ProfileGroupItemManager.cs
+++ b/v2rayN/ServiceLib/Manager/ProfileGroupItemManager.cs
@@ -38,17 +38,17 @@ public class ProfileGroupItemManager
 
     private async Task InitData()
     {
-        await SQLiteHelper.Instance.ExecuteAsync($"delete from ProfileGroupItem where parentIndexId not in ( select indexId from ProfileItem )");
+        await SQLiteHelper.Instance.ExecuteAsync($"delete from ProfileGroupItem where IndexId not in ( select indexId from ProfileItem )");
 
         var list = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
-        _items = new ConcurrentDictionary<string, ProfileGroupItem>(list.Where(t => !string.IsNullOrEmpty(t.ParentIndexId)).ToDictionary(t => t.ParentIndexId!));
+        _items = new ConcurrentDictionary<string, ProfileGroupItem>(list.Where(t => !string.IsNullOrEmpty(t.IndexId)).ToDictionary(t => t.IndexId!));
     }
 
     private ProfileGroupItem AddProfileGroupItem(string indexId)
     {
         var profileGroupItem = new ProfileGroupItem()
         {
-            ParentIndexId = indexId,
+            IndexId = indexId,
             ChildItems = string.Empty,
             MultipleLoad = EMultipleLoad.LeastPing
         };
@@ -78,19 +78,19 @@ public class ProfileGroupItemManager
         try
         {
             var lstExists = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
-            var existsMap = lstExists.Where(t => !string.IsNullOrEmpty(t.ParentIndexId)).ToDictionary(t => t.ParentIndexId!);
+            var existsMap = lstExists.Where(t => !string.IsNullOrEmpty(t.IndexId)).ToDictionary(t => t.IndexId!);
 
             var lstInserts = new List<ProfileGroupItem>();
             var lstUpdates = new List<ProfileGroupItem>();
 
             foreach (var item in _items.Values)
             {
-                if (string.IsNullOrEmpty(item.ParentIndexId))
+                if (string.IsNullOrEmpty(item.IndexId))
                 {
                     continue;
                 }
 
-                if (existsMap.ContainsKey(item.ParentIndexId))
+                if (existsMap.ContainsKey(item.IndexId))
                 {
                     lstUpdates.Add(item);
                 }
@@ -140,16 +140,16 @@ public class ProfileGroupItemManager
             throw new ArgumentNullException(nameof(item));
         }
 
-        if (string.IsNullOrWhiteSpace(item.ParentIndexId))
+        if (string.IsNullOrWhiteSpace(item.IndexId))
         {
-            throw new ArgumentException("ParentIndexId required", nameof(item));
+            throw new ArgumentException("IndexId required", nameof(item));
         }
 
-        _items[item.ParentIndexId] = item;
+        _items[item.IndexId] = item;
 
         try
         {
-            var lst = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().Where(t => t.ParentIndexId == item.ParentIndexId).ToListAsync();
+            var lst = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().Where(t => t.IndexId == item.IndexId).ToListAsync();
             if (lst != null && lst.Count > 0)
             {
                 await SQLiteHelper.Instance.UpdateAllAsync(new List<ProfileGroupItem> { item });
@@ -250,11 +250,11 @@ public class ProfileGroupItemManager
         return childProfiles;
     }
 
-    public static async Task<HashSet<string>> GetAllChildDomainAddresses(string parentIndexId)
+    public static async Task<HashSet<string>> GetAllChildDomainAddresses(string indexId)
     {
         // include grand children
         var childAddresses = new HashSet<string>();
-        if (!Instance.TryGet(parentIndexId, out var groupItem) || groupItem.ChildItems.IsNullOrEmpty())
+        if (!Instance.TryGet(indexId, out var groupItem) || groupItem.ChildItems.IsNullOrEmpty())
             return childAddresses;
 
         var childIds = Utils.String2List(groupItem.ChildItems);
diff --git a/v2rayN/ServiceLib/Models/ProfileGroupItem.cs b/v2rayN/ServiceLib/Models/ProfileGroupItem.cs
index 6fbe1d9c..1030d6de 100644
--- a/v2rayN/ServiceLib/Models/ProfileGroupItem.cs
+++ b/v2rayN/ServiceLib/Models/ProfileGroupItem.cs
@@ -6,7 +6,7 @@ namespace ServiceLib.Models;
 public class ProfileGroupItem
 {
     [PrimaryKey]
-    public string ParentIndexId { get; set; }
+    public string IndexId { get; set; }
 
     public string ChildItems { get; set; }
 
diff --git a/v2rayN/ServiceLib/ViewModels/AddGroupServerViewModel.cs b/v2rayN/ServiceLib/ViewModels/AddGroupServerViewModel.cs
index 6607c2d3..130f447d 100644
--- a/v2rayN/ServiceLib/ViewModels/AddGroupServerViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/AddGroupServerViewModel.cs
@@ -218,7 +218,7 @@ public class AddGroupServerViewModel : MyReactiveObject
             _ => EMultipleLoad.LeastPing,
         };
 
-        var hasCycle = ProfileGroupItemManager.HasCycle(profileGroup.ParentIndexId);
+        var hasCycle = ProfileGroupItemManager.HasCycle(profileGroup.IndexId);
         if (hasCycle)
         {
             NoticeManager.Instance.Enqueue(string.Format(ResUI.GroupSelfReference, remarks));