Index: Core/Common/src/Core.Common.Base/Core.Common.Base.csproj
===================================================================
diff -u -reb1b14612c89bbd3d11e3be8c6571b306f2cfe8d -ra5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1
--- Core/Common/src/Core.Common.Base/Core.Common.Base.csproj	(.../Core.Common.Base.csproj)	(revision eb1b14612c89bbd3d11e3be8c6571b306f2cfe8d)
+++ Core/Common/src/Core.Common.Base/Core.Common.Base.csproj	(.../Core.Common.Base.csproj)	(revision a5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1)
@@ -52,7 +52,7 @@
     </DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
-	<AllowedReferenceRelatedFileExtensions>none</AllowedReferenceRelatedFileExtensions>
+    <AllowedReferenceRelatedFileExtensions>none</AllowedReferenceRelatedFileExtensions>
     <OutputPath>..\..\..\..\bin\Release\</OutputPath>
     <WarningLevel>4</WarningLevel>
     <DefineConstants>TRACE</DefineConstants>
@@ -92,6 +92,7 @@
     <Compile Include="..\..\..\..\Core\Common\src\Core.Common.Version\GlobalAssembly.cs">
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
+    <Compile Include="IO\ProgressChangedDelegate.cs" />
     <Compile Include="Plugin\ApplicationPlugin.cs" />
     <Compile Include="Plugin\DataItemInfo.cs" />
     <Compile Include="Plugin\ApplicationCore.cs" />
Index: Core/Common/src/Core.Common.Base/IO/IFileImporter.cs
===================================================================
diff -u -r55ad1d69b06d380c225f26750cf93631f5851ada -ra5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1
--- Core/Common/src/Core.Common.Base/IO/IFileImporter.cs	(.../IFileImporter.cs)	(revision 55ad1d69b06d380c225f26750cf93631f5851ada)
+++ Core/Common/src/Core.Common.Base/IO/IFileImporter.cs	(.../IFileImporter.cs)	(revision a5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1)
@@ -3,8 +3,6 @@
 
 namespace Core.Common.Base.IO
 {
-    public delegate void ImportProgressChangedDelegate(string currentStepName, int currentStep, int totalSteps);
-
     /// <summary>
     /// Interface for data import from external formats.
     /// </summary>
@@ -40,9 +38,9 @@
         string FileFilter { get; }
 
         /// <summary>
-        /// Fired when progress has been changed.
+        /// Sets the action to perform when progress has changed.
         /// </summary>
-        ImportProgressChangedDelegate ProgressChanged { set; }
+        ProgressChangedDelegate ProgressChanged { set; }
 
         /// <summary>
         /// Performs an import on <paramref name="targetItem"/> from a file with path <paramref name="filePath"/>
Index: Core/Common/src/Core.Common.Base/IO/ProgressChangedDelegate.cs
===================================================================
diff -u
--- Core/Common/src/Core.Common.Base/IO/ProgressChangedDelegate.cs	(revision 0)
+++ Core/Common/src/Core.Common.Base/IO/ProgressChangedDelegate.cs	(revision a5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1)
@@ -0,0 +1,10 @@
+namespace Core.Common.Base.IO
+{
+    /// <summary>
+    /// Action to perform when progress has changed.
+    /// </summary>
+    /// <param name="currentStepDescription">The description of the current step.</param>
+    /// <param name="currentStep">The number of the current progress step.</param>
+    /// <param name="totalSteps">The total number of progress steps.</param>
+    public delegate void ProgressChangedDelegate(string currentStepDescription, int currentStep, int totalSteps);
+}
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSoilProfilesImporter.cs
===================================================================
diff -u -r55ad1d69b06d380c225f26750cf93631f5851ada -ra5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSoilProfilesImporter.cs	(.../PipingSoilProfilesImporter.cs)	(revision 55ad1d69b06d380c225f26750cf93631f5851ada)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSoilProfilesImporter.cs	(.../PipingSoilProfilesImporter.cs)	(revision a5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1)
@@ -68,7 +68,7 @@
             shouldCancel = true;
         }
 
-        public ImportProgressChangedDelegate ProgressChanged { get; set; }
+        public ProgressChangedDelegate ProgressChanged { get; set; }
 
         public bool CanImportFor(object targetItem)
         {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs
===================================================================
diff -u -r55ad1d69b06d380c225f26750cf93631f5851ada -ra5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs	(.../PipingSurfaceLinesCsvImporter.cs)	(revision 55ad1d69b06d380c225f26750cf93631f5851ada)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs	(.../PipingSurfaceLinesCsvImporter.cs)	(revision a5b6ad37f1dff6447a17f0f8ea3fc47a5517c2e1)
@@ -80,7 +80,7 @@
             shouldCancel = true;
         }
 
-        public ImportProgressChangedDelegate ProgressChanged { get; set; }
+        public ProgressChangedDelegate ProgressChanged { get; set; }
 
         public bool CanImportFor(object targetItem)
         {