diff --git a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Applications/OpenIddictApplicationExtensions.cs b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Applications/OpenIddictApplicationExtensions.cs
index 87ef747f7bf..34ff4ba41f8 100644
--- a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Applications/OpenIddictApplicationExtensions.cs
+++ b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Applications/OpenIddictApplicationExtensions.cs
@@ -25,6 +25,7 @@ public static OpenIddictApplication ToEntity(this OpenIddictApplicationModel mod
 
         foreach (var extraProperty in model.ExtraProperties)
         {
+            entity.ExtraProperties.Remove(extraProperty.Key);
             entity.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
@@ -86,6 +87,7 @@ public static OpenIddictApplicationModel ToModel(this OpenIddictApplication enti
 
         foreach (var extraProperty in entity.ExtraProperties)
         {
+            model.ExtraProperties.Remove(extraProperty.Key);
             model.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
diff --git a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Authorizations/OpenIddictAuthorizationExtensions.cs b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Authorizations/OpenIddictAuthorizationExtensions.cs
index 28ad28a2064..80ef56539b8 100644
--- a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Authorizations/OpenIddictAuthorizationExtensions.cs
+++ b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Authorizations/OpenIddictAuthorizationExtensions.cs
@@ -19,6 +19,7 @@ public static OpenIddictAuthorization ToEntity(this OpenIddictAuthorizationModel
 
         foreach (var extraProperty in model.ExtraProperties)
         {
+            entity.ExtraProperties.Remove(extraProperty.Key);
             entity.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
@@ -68,6 +69,7 @@ public static OpenIddictAuthorizationModel ToModel(this OpenIddictAuthorization
 
         foreach (var extraProperty in entity.ExtraProperties)
         {
+            model.ExtraProperties.Remove(extraProperty.Key);
             model.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
diff --git a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Scopes/OpenIddictScopeExtensions.cs b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Scopes/OpenIddictScopeExtensions.cs
index b6870d9d67d..6734af2e1b2 100644
--- a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Scopes/OpenIddictScopeExtensions.cs
+++ b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Scopes/OpenIddictScopeExtensions.cs
@@ -19,6 +19,7 @@ public static OpenIddictScope ToEntity(this OpenIddictScopeModel model)
 
         foreach (var extraProperty in model.ExtraProperties)
         {
+            entity.ExtraProperties.Remove(extraProperty.Key);
             entity.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
@@ -69,6 +70,7 @@ public static OpenIddictScopeModel ToModel(this OpenIddictScope entity)
 
         foreach (var extraProperty in entity.ExtraProperties)
         {
+            model.ExtraProperties.Remove(extraProperty.Key);
             model.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
diff --git a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Tokens/OpenIddictTokenExtensions.cs b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Tokens/OpenIddictTokenExtensions.cs
index 57991884834..10b290f2725 100644
--- a/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Tokens/OpenIddictTokenExtensions.cs
+++ b/modules/openiddict/src/Volo.Abp.OpenIddict.Domain/Volo/Abp/OpenIddict/Tokens/OpenIddictTokenExtensions.cs
@@ -24,6 +24,7 @@ public static OpenIddictToken ToEntity(this OpenIddictTokenModel model)
 
         foreach (var extraProperty in model.ExtraProperties)
         {
+            entity.ExtraProperties.Remove(extraProperty.Key);
             entity.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }
 
@@ -81,6 +82,7 @@ public static OpenIddictTokenModel ToModel(this OpenIddictToken entity)
 
         foreach (var extraProperty in entity.ExtraProperties)
         {
+            model.ExtraProperties.Remove(extraProperty.Key);
             model.ExtraProperties.Add(extraProperty.Key, extraProperty.Value);
         }