diff --git a/framework/src/Volo.Abp.AutoMapper/AutoMapper/AbpAutoMapperExtensibleDtoExtensions.cs b/framework/src/Volo.Abp.AutoMapper/AutoMapper/AbpAutoMapperExtensibleDtoExtensions.cs
index e277fbf202..ab07f6235e 100644
--- a/framework/src/Volo.Abp.AutoMapper/AutoMapper/AbpAutoMapperExtensibleDtoExtensions.cs
+++ b/framework/src/Volo.Abp.AutoMapper/AutoMapper/AbpAutoMapperExtensibleDtoExtensions.cs
@@ -7,7 +7,8 @@ namespace AutoMapper
     public static class AbpAutoMapperExtensibleDtoExtensions
     {
         public static IMappingExpression<TSource, TDestination> MapExtraProperties<TSource, TDestination>(
-            this IMappingExpression<TSource, TDestination> mappingExpression)
+            this IMappingExpression<TSource, TDestination> mappingExpression,
+            MappingPropertyDefinitionCheck definitionCheck = MappingPropertyDefinitionCheck.Both)
             where TDestination : IHasExtraProperties
             where TSource : IHasExtraProperties
         {
@@ -15,28 +16,21 @@ namespace AutoMapper
                 .ForMember(
                     x => x.ExtraProperties,
                     y => y.MapFrom(
-                        (source, dto, extraProps) =>
+                        (source, destination, extraProps) =>
                         {
                             var result = extraProps.IsNullOrEmpty()
                                 ? new Dictionary<string, object>()
                                 : new Dictionary<string, object>(extraProps);
 
-                            var objectExtension = ObjectExtensionManager.Instance.GetOrNull<TDestination>();
-
-                            if (objectExtension != null)
-                            {
-                                foreach (var property in objectExtension.GetProperties())
-                                {
-                                    if (source.ExtraProperties.ContainsKey(property.Name))
-                                    {
-                                        result[property.Name] = source.ExtraProperties[property.Name];
-                                    }
-                                }
-                            }
+                            HasExtraPropertiesObjectExtendingExtensions
+                                .MapExtraPropertiesTo<TSource, TDestination>(
+                                    source.ExtraProperties,
+                                    result
+                                );
 
                             return result;
                         })
                 );
         }
     }
-}
+}
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions.cs b/framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions.cs
index 92dfeb8d19..61ee13fc89 100644
--- a/framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions.cs
+++ b/framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Volo.Abp.Data;
 
 namespace Volo.Abp.ObjectExtending
@@ -12,8 +13,8 @@ namespace Volo.Abp.ObjectExtending
         /// Checks property definitions (over the <see cref="ObjectExtensionManager"/>)
         /// based on the <paramref name="definitionCheck"/> preference.
         /// </summary>
-        /// <typeparam name="TSource"></typeparam>
-        /// <typeparam name="TDestination"></typeparam>
+        /// <typeparam name="TSource">Source class type</typeparam>
+        /// <typeparam name="TDestination">Destination class type</typeparam>
         /// <param name="source">The source object</param>
         /// <param name="destination">The destination object</param>
         /// <param name="definitionCheck">
@@ -25,6 +26,34 @@ namespace Volo.Abp.ObjectExtending
             MappingPropertyDefinitionCheck definitionCheck = MappingPropertyDefinitionCheck.Both)
             where TSource : IHasExtraProperties
             where TDestination : IHasExtraProperties
+        {
+            MapExtraPropertiesTo<TSource, TDestination>(
+                source.ExtraProperties,
+                destination.ExtraProperties,
+                definitionCheck
+            );
+        }
+
+        /// <summary>
+        /// Copies extra properties from the <paramref name="sourceDictionary"/> object
+        /// to the <paramref name="destinationDictionary"/> object.
+        ///
+        /// Checks property definitions (over the <see cref="ObjectExtensionManager"/>)
+        /// based on the <paramref name="definitionCheck"/> preference.
+        /// </summary>
+        /// <typeparam name="TSource">Source class type (for definition check)</typeparam>
+        /// <typeparam name="TDestination">Destination class type (for definition check)</typeparam>
+        /// <param name="sourceDictionary">The source dictionary object</param>
+        /// <param name="destinationDictionary">The destination dictionary object</param>
+        /// <param name="definitionCheck">
+        /// Controls which properties to map.
+        /// </param>
+        public static void MapExtraPropertiesTo<TSource, TDestination>(
+            Dictionary<string, object> sourceDictionary,
+            Dictionary<string, object> destinationDictionary,
+            MappingPropertyDefinitionCheck definitionCheck = MappingPropertyDefinitionCheck.Both)
+            where TSource : IHasExtraProperties
+            where TDestination : IHasExtraProperties
         {
             var sourceObjectExtension = ObjectExtensionManager.Instance.GetOrNull<TSource>();
             if (definitionCheck.HasFlag(MappingPropertyDefinitionCheck.Source) &&
@@ -42,40 +71,40 @@ namespace Volo.Abp.ObjectExtending
 
             if (definitionCheck == MappingPropertyDefinitionCheck.None)
             {
-                foreach (var keyValue in source.ExtraProperties)
+                foreach (var keyValue in sourceDictionary)
                 {
-                    destination.ExtraProperties[keyValue.Key] = keyValue.Value;
+                    destinationDictionary[keyValue.Key] = keyValue.Value;
                 }
             }
             else if (definitionCheck == MappingPropertyDefinitionCheck.Source)
             {
                 foreach (var property in sourceObjectExtension.GetProperties())
                 {
-                    if (!source.ExtraProperties.ContainsKey(property.Name))
+                    if (!sourceDictionary.ContainsKey(property.Name))
                     {
                         continue;
                     }
 
-                    destination.ExtraProperties[property.Name] = source.ExtraProperties[property.Name];
+                    destinationDictionary[property.Name] = sourceDictionary[property.Name];
                 }
             }
             else if (definitionCheck == MappingPropertyDefinitionCheck.Destination)
             {
-                foreach (var keyValue in source.ExtraProperties)
+                foreach (var keyValue in sourceDictionary)
                 {
                     if (!destinationObjectExtension.HasProperty(keyValue.Key))
                     {
                         continue;
                     }
 
-                    destination.ExtraProperties[keyValue.Key] = keyValue.Value;
+                    destinationDictionary[keyValue.Key] = keyValue.Value;
                 }
             }
-            else if(definitionCheck == MappingPropertyDefinitionCheck.Both)
+            else if (definitionCheck == MappingPropertyDefinitionCheck.Both)
             {
                 foreach (var property in sourceObjectExtension.GetProperties())
                 {
-                    if (!source.ExtraProperties.ContainsKey(property.Name))
+                    if (!sourceDictionary.ContainsKey(property.Name))
                     {
                         continue;
                     }
@@ -85,7 +114,7 @@ namespace Volo.Abp.ObjectExtending
                         continue;
                     }
 
-                    destination.ExtraProperties[property.Name] = source.ExtraProperties[property.Name];
+                    destinationDictionary[property.Name] = sourceDictionary[property.Name];
                 }
             }
             else
diff --git a/framework/test/Volo.Abp.AutoMapper.Tests/AutoMapper/AbpAutoMapperExtensibleDtoExtensions_Tests.cs b/framework/test/Volo.Abp.AutoMapper.Tests/AutoMapper/AbpAutoMapperExtensibleDtoExtensions_Tests.cs
new file mode 100644
index 0000000000..a55e7d32e3
--- /dev/null
+++ b/framework/test/Volo.Abp.AutoMapper.Tests/AutoMapper/AbpAutoMapperExtensibleDtoExtensions_Tests.cs
@@ -0,0 +1,41 @@
+using Microsoft.Extensions.DependencyInjection;
+using Shouldly;
+using Volo.Abp.AutoMapper;
+using Volo.Abp.Data;
+using Volo.Abp.ObjectExtending.TestObjects;
+using Volo.Abp.Testing;
+using Xunit;
+
+namespace AutoMapper
+{
+    public class AbpAutoMapperExtensibleDtoExtensions_Tests : AbpIntegratedTest<AutoMapperTestModule>
+    {
+        private readonly Volo.Abp.ObjectMapping.IObjectMapper _objectMapper;
+
+        public AbpAutoMapperExtensibleDtoExtensions_Tests()
+        {
+            _objectMapper = ServiceProvider.GetRequiredService<Volo.Abp.ObjectMapping.IObjectMapper>();
+        }
+
+        [Fact]
+        public void MapExtraPropertiesTo_Should_Only_Map_Defined_Properties_By_Default()
+        {
+            var person = new ExtensibleTestPerson()
+                .SetProperty("Name", "John")
+                .SetProperty("Age", 42)
+                .SetProperty("ChildCount", 2)
+                .SetProperty("Sex", "male");
+
+            var personDto = new ExtensibleTestPersonDto()
+                .SetProperty("ExistingDtoProperty", "existing-value");
+
+            _objectMapper.Map(person, personDto);
+
+            personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
+            personDto.HasProperty("Age").ShouldBeFalse(); //Not defined on the destination
+            personDto.HasProperty("ChildCount").ShouldBeFalse(); //Not defined in the source
+            personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            personDto.GetProperty<string>("ExistingDtoProperty").ShouldBe("existing-value"); //Should not clear existing values
+        }
+    }
+}
diff --git a/framework/test/Volo.Abp.AutoMapper.Tests/Volo.Abp.AutoMapper.Tests.csproj b/framework/test/Volo.Abp.AutoMapper.Tests/Volo.Abp.AutoMapper.Tests.csproj
index acdd6fac6b..6178700db1 100644
--- a/framework/test/Volo.Abp.AutoMapper.Tests/Volo.Abp.AutoMapper.Tests.csproj
+++ b/framework/test/Volo.Abp.AutoMapper.Tests/Volo.Abp.AutoMapper.Tests.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\Volo.Abp.AutoMapper\Volo.Abp.AutoMapper.csproj" />
-    <ProjectReference Include="..\AbpTestBase\AbpTestBase.csproj" />
+    <ProjectReference Include="..\Volo.Abp.ObjectExtending.Tests\Volo.Abp.ObjectExtending.Tests.csproj" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
   </ItemGroup>
 
diff --git a/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/AutoMapperTestModule.cs b/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/AutoMapperTestModule.cs
index 3d873ccacf..44331522a7 100644
--- a/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/AutoMapperTestModule.cs
+++ b/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/AutoMapperTestModule.cs
@@ -1,9 +1,12 @@
-using Microsoft.Extensions.DependencyInjection;
-using Volo.Abp.Modularity;
+using Volo.Abp.Modularity;
+using Volo.Abp.ObjectExtending;
 
 namespace Volo.Abp.AutoMapper
 {
-    [DependsOn(typeof(AbpAutoMapperModule))]
+    [DependsOn(
+        typeof(AbpAutoMapperModule),
+        typeof(AbpObjectExtendingTestModule)
+        )]
     public class AutoMapperTestModule : AbpModule
     {
         public override void ConfigureServices(ServiceConfigurationContext context)
diff --git a/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyMapProfile.cs b/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyMapProfile.cs
index a65a7209e2..7fb8dbd2fa 100644
--- a/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyMapProfile.cs
+++ b/framework/test/Volo.Abp.AutoMapper.Tests/Volo/Abp/AutoMapper/SampleClasses/MyMapProfile.cs
@@ -1,4 +1,5 @@
 using AutoMapper;
+using Volo.Abp.ObjectExtending.TestObjects;
 
 namespace Volo.Abp.AutoMapper.SampleClasses
 {
@@ -7,6 +8,9 @@ namespace Volo.Abp.AutoMapper.SampleClasses
         public MyMapProfile()
         {
             CreateMap<MyEntity, MyEntityDto>().ReverseMap();
+
+            CreateMap<ExtensibleTestPerson, ExtensibleTestPersonDto>()
+                .MapExtraProperties();
         }
     }
 }
diff --git a/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/AbpObjectExtendingTestModule.cs b/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/AbpObjectExtendingTestModule.cs
index 30db2aba71..6dcee4d5b2 100644
--- a/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/AbpObjectExtendingTestModule.cs
+++ b/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/AbpObjectExtendingTestModule.cs
@@ -4,7 +4,10 @@ using Volo.Abp.Threading;
 
 namespace Volo.Abp.ObjectExtending
 {
-    [DependsOn(typeof(AbpObjectExtendingModule))]
+    [DependsOn(
+        typeof(AbpObjectExtendingModule),
+        typeof(AbpTestBaseModule)
+        )]
     public class AbpObjectExtendingTestModule : AbpModule
     {
         private static readonly OneTimeRunner OneTimeRunner = new OneTimeRunner();
diff --git a/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions_Tests.cs b/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions_Tests.cs
index 727ec25646..36d1f1988b 100644
--- a/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions_Tests.cs
+++ b/framework/test/Volo.Abp.ObjectExtending.Tests/Volo/Abp/ObjectExtending/HasExtraPropertiesObjectExtendingExtensions_Tests.cs
@@ -8,6 +8,7 @@ namespace Volo.Abp.ObjectExtending
     public class HasExtraPropertiesObjectExtendingExtensions_Tests : AbpObjectExtendingTestBase
     {
         private readonly ExtensibleTestPerson _person;
+        private readonly ExtensibleTestPersonDto _personDto;
 
         public HasExtraPropertiesObjectExtendingExtensions_Tests()
         {
@@ -16,58 +17,57 @@ namespace Volo.Abp.ObjectExtending
                 .SetProperty("Age", 42)
                 .SetProperty("ChildCount", 2)
                 .SetProperty("Sex", "male");
+
+            _personDto = new ExtensibleTestPersonDto()
+                .SetProperty("ExistingDtoProperty", "existing-value");
         }
         
         [Fact]
         public void MapExtraPropertiesTo_Should_Only_Map_Defined_Properties_By_Default()
         {
-            var personDto = new ExtensibleTestPersonDto();
-            
-            _person.MapExtraPropertiesTo(personDto);
+            _person.MapExtraPropertiesTo(_personDto);
 
-            personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
-            personDto.HasProperty("Age").ShouldBeFalse(); //Not defined on the destination
-            personDto.HasProperty("ChildCount").ShouldBeFalse(); //Not defined in the source
-            personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            _personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
+            _personDto.HasProperty("Age").ShouldBeFalse(); //Not defined on the destination
+            _personDto.HasProperty("ChildCount").ShouldBeFalse(); //Not defined in the source
+            _personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            _personDto.GetProperty<string>("ExistingDtoProperty").ShouldBe("existing-value"); //Should not clear existing values
         }
 
         [Fact]
         public void MapExtraPropertiesTo_Should_Only_Map_Source_Defined_Properties_If_Requested()
         {
-            var personDto = new ExtensibleTestPersonDto();
-
-            _person.MapExtraPropertiesTo(personDto, MappingPropertyDefinitionCheck.Source);
+            _person.MapExtraPropertiesTo(_personDto, MappingPropertyDefinitionCheck.Source);
 
-            personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
-            personDto.GetProperty<int>("Age").ShouldBe(42); //Defined in source
-            personDto.HasProperty("ChildCount").ShouldBeFalse(); //Not defined in the source
-            personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            _personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
+            _personDto.GetProperty<int>("Age").ShouldBe(42); //Defined in source
+            _personDto.HasProperty("ChildCount").ShouldBeFalse(); //Not defined in the source
+            _personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            _personDto.GetProperty<string>("ExistingDtoProperty").ShouldBe("existing-value"); //Should not clear existing values
         }
 
         [Fact]
         public void MapExtraPropertiesTo_Should_Only_Map_Destination_Defined_Properties_If_Requested()
         {
-            var personDto = new ExtensibleTestPersonDto();
+            _person.MapExtraPropertiesTo(_personDto, MappingPropertyDefinitionCheck.Destination);
 
-            _person.MapExtraPropertiesTo(personDto, MappingPropertyDefinitionCheck.Destination);
-
-            personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
-            personDto.GetProperty<int>("ChildCount").ShouldBe(2); //Defined in destination
-            personDto.HasProperty("Age").ShouldBeFalse(); //Not defined in destination
-            personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            _personDto.GetProperty<string>("Name").ShouldBe("John"); //Defined in both classes
+            _personDto.GetProperty<int>("ChildCount").ShouldBe(2); //Defined in destination
+            _personDto.HasProperty("Age").ShouldBeFalse(); //Not defined in destination
+            _personDto.HasProperty("Sex").ShouldBeFalse(); //Not defined in both classes
+            _personDto.GetProperty<string>("ExistingDtoProperty").ShouldBe("existing-value"); //Should not clear existing values
         }
 
         [Fact]
         public void MapExtraPropertiesTo_Should_Copy_all_With_No_Property_Definition_Check()
         {
-            var personDto = new ExtensibleTestPersonDto();
-
-            _person.MapExtraPropertiesTo(personDto, MappingPropertyDefinitionCheck.None);
+            _person.MapExtraPropertiesTo(_personDto, MappingPropertyDefinitionCheck.None);
 
-            personDto.GetProperty<string>("Name").ShouldBe("John");
-            personDto.GetProperty<int>("Age").ShouldBe(42);
-            personDto.GetProperty<int>("ChildCount").ShouldBe(2);
-            personDto.GetProperty<string>("Sex").ShouldBe("male");
+            _personDto.GetProperty<string>("Name").ShouldBe("John");
+            _personDto.GetProperty<int>("Age").ShouldBe(42);
+            _personDto.GetProperty<int>("ChildCount").ShouldBe(2);
+            _personDto.GetProperty<string>("Sex").ShouldBe("male");
+            _personDto.GetProperty<string>("ExistingDtoProperty").ShouldBe("existing-value"); //Should not clear existing values
         }
     }
 }