diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToMany.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToMany.cs
index e48133ae5..0c97314c5 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToMany.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToMany.cs
@@ -8,7 +8,7 @@ namespace SqlSugar
 {
     public partial class UpdateNavProvider<Root, T> where T : class, new() where Root : class, new()
     {
-
+        public NavigateType? _NavigateType { get; set; }
         private void UpdateOneToMany<TChild>(string name, EntityColumnInfo nav) where TChild : class, new()
         {
             List<TChild> children = new List<TChild>();
@@ -34,15 +34,17 @@ namespace SqlSugar
                     foreach (var child in childs)
                     {
                         thisFkColumn.PropertyInfo.SetValue(child, parentValue, null);
-                        ids.Add(parentValue);
                     }
                     children.AddRange(childs);
                 }
+                ids.Add(parentValue);
             }
             this._Context.Deleteable<object>()
                 .AS(thisEntity.DbTableName)
                 .In(thisFkColumn.DbColumnName, ids.Distinct().ToList()).ExecuteCommand();
+            _NavigateType = NavigateType.OneToMany;
             InsertDatas(children, thisPkColumn);
+            _NavigateType = null;
             SetNewParent<TChild>(thisEntity, thisPkColumn);
         }
 
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavProviderHelper.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavProviderHelper.cs
index a0c7ab1dc..a7577c3f2 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavProviderHelper.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavProviderHelper.cs
@@ -74,7 +74,14 @@ namespace SqlSugar
             Check.ExceptionEasy(pkColumn == null && NavColumn == null, $"The entity is invalid", $"实体错误无法使用导航");
             x.AsUpdateable.ExecuteCommand();
             InitData(pkColumn, insertData);
-            this._ParentList = insertData.Union(updateData).Cast<object>().ToList();
+            if (_NavigateType == NavigateType.OneToMany)
+            {
+                this._ParentList = children.Cast<object>().ToList();
+            }
+            else
+            {
+                this._ParentList = insertData.Union(updateData).Cast<object>().ToList();
+            }
         }
 
         private void InitData<TChild>(EntityColumnInfo pkColumn, List<TChild> UpdateData) where TChild : class, new()
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToOneNavgateExpressionN.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToOneNavgateExpressionN.cs
index 14d672dc4..e37281256 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToOneNavgateExpressionN.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToOneNavgateExpressionN.cs
@@ -68,6 +68,14 @@ namespace SqlSugar
             queryable.Select($" {ToShortName(lastShortName)}.{queryable.SqlBuilder.GetTranslationColumnName(selectColumnInfo.DbColumnName)}");
             var last = subInfos.First();
             var FirstPkColumn = last.ThisEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
+            if (last.Nav.Name2.HasValue()) 
+            {
+                var nav2 = last.ThisEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == last.Nav.Name2);
+                if (nav2 != null) 
+                {
+                    FirstPkColumn = nav2;
+                }
+            }
             Check.ExceptionEasy(FirstPkColumn == null, $"{ last.ThisEntityInfo.EntityName} need PrimayKey", $"使用导航属性{ last.ThisEntityInfo.EntityName} 缺少主键");
             var PkColumn = last.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == last.Nav.Name);
             Check.ExceptionEasy(PkColumn == null, $"{ last.ParentEntityInfo.EntityName} no found {last.Nav.Name}", $"{ last.ParentEntityInfo.EntityName} 不存在 {last.Nav.Name}");