diff --git a/GridBlazor/GridBlazor.csproj b/GridBlazor/GridBlazor.csproj
index 0d10ef82..4da31ce8 100644
--- a/GridBlazor/GridBlazor.csproj
+++ b/GridBlazor/GridBlazor.csproj
@@ -6,7 +6,7 @@
     <LangVersion>11.0</LangVersion>
     <GenerateEmbeddedFilesManifest>True</GenerateEmbeddedFilesManifest>
     <EnableDefaultEmbeddedResourceItems>False</EnableDefaultEmbeddedResourceItems>
-    <Version>5.0.7</Version>
+    <Version>5.0.8</Version>
     <Title>GridBlazor</Title>
     <Description>Grid components for Blazor</Description>
     <Summary>Grid components for Blazor</Summary>
diff --git a/GridCore/GridCore.csproj b/GridCore/GridCore.csproj
index c52e9e5b..7a51bb0b 100644
--- a/GridCore/GridCore.csproj
+++ b/GridCore/GridCore.csproj
@@ -7,7 +7,7 @@
     <EnableDefaultEmbeddedResourceItems>False</EnableDefaultEmbeddedResourceItems>
     <Product>GridCore</Product>
     <PackageId>GridCore</PackageId>
-    <Version>7.0.4</Version>
+    <Version>7.0.5</Version>
     <Title>GridCore</Title>
     <Description>Grid core component</Description>
     <Summary>Grid core component</Summary>
diff --git a/GridMvc/GridMvc.csproj b/GridMvc/GridMvc.csproj
index d2510e8c..255256b1 100644
--- a/GridMvc/GridMvc.csproj
+++ b/GridMvc/GridMvc.csproj
@@ -8,7 +8,7 @@
     <EnableDefaultEmbeddedResourceItems>False</EnableDefaultEmbeddedResourceItems>
     <Product>GridMvc</Product>
     <PackageId>GridMvcCore</PackageId>
-    <Version>7.0.4</Version>
+    <Version>7.0.5</Version>
     <Title>GridMvc</Title>
     <Description>ASP.NET MVC Grid component</Description>
     <Summary>ASP.NET MVC Grid component</Summary>
diff --git a/GridShared/Filtering/Types/FilterTypeBase.cs b/GridShared/Filtering/Types/FilterTypeBase.cs
index 656f69e3..3166bfde 100644
--- a/GridShared/Filtering/Types/FilterTypeBase.cs
+++ b/GridShared/Filtering/Types/FilterTypeBase.cs
@@ -50,7 +50,8 @@ protected Expression GetFilterExpression<T, S>(Expression leftExpr, string value
             filterType = GetValidType(filterType);
 
             object typedValue = GetTypedValue(value);
-            if (typedValue == null)
+            if (typedValue == null && filterType != GridFilterType.IsDuplicated 
+                && filterType != GridFilterType.IsNotDuplicated)
                 return null; //incorrent filter value;
 
             Type targetType = TargetType;
@@ -85,13 +86,13 @@ protected Expression GetFilterExpression<T, S>(Expression leftExpr, string value
                     MethodInfo methodInfo = typeof(Queryable).GetMethods()
                         .Single(r => r.Name == "Contains" && r.GetParameters().Length == 2)
                         .MakeGenericMethod(new Type[] { typeof(S) });
-                    return Expression.Call(groupBy, methodInfo, leftExpr);
+                    return Expression.Call(methodInfo, groupBy, leftExpr);
                 case GridFilterType.IsNotDuplicated:
                     groupBy = GetGroupBy<T, S>(source, leftExpr);
                     methodInfo = typeof(Queryable).GetMethods()
                         .Single(r => r.Name == "Contains" && r.GetParameters().Length == 2)
                         .MakeGenericMethod(new Type[] { typeof(S) });
-                    var expresion = Expression.Call(groupBy, methodInfo, leftExpr);
+                    var expresion = Expression.Call(methodInfo, groupBy, leftExpr);
                     return Expression.Not(expresion);
                 default:
                     throw new ArgumentOutOfRangeException();
diff --git a/GridShared/Filtering/Types/GuidFilterType.cs b/GridShared/Filtering/Types/GuidFilterType.cs
index 933904b1..ab6649c6 100644
--- a/GridShared/Filtering/Types/GuidFilterType.cs
+++ b/GridShared/Filtering/Types/GuidFilterType.cs
@@ -44,7 +44,8 @@ public override Expression GetFilterExpression<T>(Expression leftExpr, string va
             filterType = GetValidType(filterType);
 
             object typedValue = GetTypedValue(value);
-            if (typedValue == null)
+            if (typedValue == null && filterType != GridFilterType.IsDuplicated
+                && filterType != GridFilterType.IsNotDuplicated)
                 return null; //incorrent filter value;
 
             Expression valueExpr = Expression.Constant(typedValue);
@@ -76,14 +77,14 @@ public override Expression GetFilterExpression<T>(Expression leftExpr, string va
                     MethodInfo methodInfo = typeof(Queryable).GetMethods()
                         .Single(r => r.Name == "Contains" && r.GetParameters().Length == 2)
                         .MakeGenericMethod(new Type[] { typeof(Guid) });
-                    binaryExpression = Expression.Call(groupBy, methodInfo, toStringLeftExpr);
+                    binaryExpression = Expression.Call(methodInfo, groupBy, toStringLeftExpr);
                     break;
                 case GridFilterType.IsNotDuplicated:
                     groupBy = GetGroupBy<T, Guid>(source, leftExpr);
                     methodInfo = typeof(Queryable).GetMethods()
                         .Single(r => r.Name == "Contains" && r.GetParameters().Length == 2)
                         .MakeGenericMethod(new Type[] { typeof(Guid) });
-                    var expresion = Expression.Call(groupBy, methodInfo, toStringLeftExpr);
+                    var expresion = Expression.Call(methodInfo, groupBy, toStringLeftExpr);
                     binaryExpression = Expression.Not(expresion);
                     break;
                 default:
diff --git a/GridShared/GridShared.csproj b/GridShared/GridShared.csproj
index c73926b3..03ae107a 100644
--- a/GridShared/GridShared.csproj
+++ b/GridShared/GridShared.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.1;net5.0;net6.0;net7.0;net8.0</TargetFrameworks>
     <LangVersion>11.0</LangVersion>
-    <Version>7.0.3</Version>
+    <Version>7.0.4</Version>
     <Title>GridShared</Title>
     <Description>Support library for GridBlazor and GridMvcCore component libraries</Description>
     <Summary>Support library for GridBlazor and GridMvcCore component libraries</Summary>