Index: Ringtoets/Common/src/Ringtoets.Common.IO/FileImporters/CalculationConfigurationImporter.cs
===================================================================
diff -u -rfc204f9f1958c10c27c00e43fc2dba43565f7b35 -r5e9837463c9e1f6fcf8404b943e374650586f99e
--- Ringtoets/Common/src/Ringtoets.Common.IO/FileImporters/CalculationConfigurationImporter.cs	(.../CalculationConfigurationImporter.cs)	(revision fc204f9f1958c10c27c00e43fc2dba43565f7b35)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/FileImporters/CalculationConfigurationImporter.cs	(.../CalculationConfigurationImporter.cs)	(revision 5e9837463c9e1f6fcf8404b943e374650586f99e)
@@ -20,10 +20,13 @@
 // All rights reserved.
 
 using System;
+using System.Collections.Generic;
 using Core.Common.Base.IO;
+using Core.Common.IO.Readers;
 using log4net;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.IO.Properties;
+using Ringtoets.Common.IO.Readers;
 
 namespace Ringtoets.Common.IO.FileImporters
 {
@@ -49,5 +52,51 @@
         {
             log.Info(Resources.CalculationConfigurationImporter_LogImportCanceledMessage_Import_canceled_no_data_read);
         }
+
+        protected override bool OnImport()
+        {
+            NotifyProgress(Resources.CalculationConfigurationImporter_ProgressText_Reading_configuration, 1, 3);
+
+            ReadResult<IReadConfigurationItem> readResult = ReadConfiguration();
+            if (readResult.CriticalErrorOccurred || Canceled)
+            {
+                return false;
+            }
+
+            NotifyProgress(Resources.CalculationConfigurationImporter_ProgressText_Validating_imported_data, 2, 3);
+
+            var validCalculationItems = new List<ICalculationBase>();
+
+            foreach (IReadConfigurationItem readItem in readResult.Items)
+            {
+                if (Canceled)
+                {
+                    return false;
+                }
+
+                ICalculationBase processedItem = ProcessReadItem(readItem);
+                if (processedItem != null)
+                {
+                    validCalculationItems.Add(processedItem);
+                }
+            }
+
+            NotifyProgress(Resources.Importer_ProgressText_Adding_imported_data_to_data_model, 3, 3);
+            AddItemsToModel(validCalculationItems);
+
+            return true;
+        }
+
+        protected abstract ICalculationBase ProcessReadItem(IReadConfigurationItem readItem);
+
+        protected abstract ReadResult<IReadConfigurationItem> ReadConfiguration();
+
+        private void AddItemsToModel(IEnumerable<ICalculationBase> validCalculationItems)
+        {
+            foreach (ICalculationBase validCalculationItem in validCalculationItems)
+            {
+                ImportTarget.Children.Add(validCalculationItem);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.IO/Properties/Resources.Designer.cs
===================================================================
diff -u -rfc204f9f1958c10c27c00e43fc2dba43565f7b35 -r5e9837463c9e1f6fcf8404b943e374650586f99e
--- Ringtoets/Common/src/Ringtoets.Common.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision fc204f9f1958c10c27c00e43fc2dba43565f7b35)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 5e9837463c9e1f6fcf8404b943e374650586f99e)
@@ -92,6 +92,24 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Inlezen berekeningenconfiguratie..
+        /// </summary>
+        public static string CalculationConfigurationImporter_ProgressText_Reading_configuration {
+            get {
+                return ResourceManager.GetString("CalculationConfigurationImporter_ProgressText_Reading_configuration", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Valideren berekeningenconfiguratie..
+        /// </summary>
+        public static string CalculationConfigurationImporter_ProgressText_Validating_imported_data {
+            get {
+                return ResourceManager.GetString("CalculationConfigurationImporter_ProgressText_Validating_imported_data", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
         ///
         ///&lt;!--
Index: Ringtoets/Common/src/Ringtoets.Common.IO/Properties/Resources.resx
===================================================================
diff -u -rfc204f9f1958c10c27c00e43fc2dba43565f7b35 -r5e9837463c9e1f6fcf8404b943e374650586f99e
--- Ringtoets/Common/src/Ringtoets.Common.IO/Properties/Resources.resx	(.../Resources.resx)	(revision fc204f9f1958c10c27c00e43fc2dba43565f7b35)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Properties/Resources.resx	(.../Resources.resx)	(revision 5e9837463c9e1f6fcf8404b943e374650586f99e)
@@ -528,4 +528,10 @@
   <data name="CalculationConfigurationImporter_LogImportCanceledMessage_Import_canceled_no_data_read" xml:space="preserve">
     <value>Berekeningenconfiguratie importeren afgebroken. Geen data ingelezen.</value>
   </data>
+  <data name="CalculationConfigurationImporter_ProgressText_Reading_configuration" xml:space="preserve">
+    <value>Inlezen berekeningenconfiguratie.</value>
+  </data>
+  <data name="CalculationConfigurationImporter_ProgressText_Validating_imported_data" xml:space="preserve">
+    <value>Valideren berekeningenconfiguratie.</value>
+  </data>
 </root>
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/FileImporters/CalculationConfigurationImporterTest.cs
===================================================================
diff -u -rfc204f9f1958c10c27c00e43fc2dba43565f7b35 -r5e9837463c9e1f6fcf8404b943e374650586f99e
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/FileImporters/CalculationConfigurationImporterTest.cs	(.../CalculationConfigurationImporterTest.cs)	(revision fc204f9f1958c10c27c00e43fc2dba43565f7b35)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/FileImporters/CalculationConfigurationImporterTest.cs	(.../CalculationConfigurationImporterTest.cs)	(revision 5e9837463c9e1f6fcf8404b943e374650586f99e)
@@ -21,10 +21,12 @@
 
 using System;
 using Core.Common.Base.IO;
+using Core.Common.IO.Readers;
 using Core.Common.TestUtil;
 using NUnit.Framework;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.IO.FileImporters;
+using Ringtoets.Common.IO.Readers;
 
 namespace Ringtoets.Common.IO.Test.FileImporters
 {
@@ -74,6 +76,16 @@
 
                 return true;
             }
+
+            protected override ICalculationBase ProcessReadItem(IReadConfigurationItem readItem)
+            {
+                throw new NotImplementedException();
+            }
+
+            protected override ReadResult<IReadConfigurationItem> ReadConfiguration()
+            {
+                throw new NotImplementedException();
+            }
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Importers/PipingConfigurationImporter.cs
===================================================================
diff -u -rfc204f9f1958c10c27c00e43fc2dba43565f7b35 -r5e9837463c9e1f6fcf8404b943e374650586f99e
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Importers/PipingConfigurationImporter.cs	(.../PipingConfigurationImporter.cs)	(revision fc204f9f1958c10c27c00e43fc2dba43565f7b35)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Importers/PipingConfigurationImporter.cs	(.../PipingConfigurationImporter.cs)	(revision 5e9837463c9e1f6fcf8404b943e374650586f99e)
@@ -115,7 +115,7 @@
             return true;
         }
 
-        private ReadResult<IReadConfigurationItem> ReadConfiguration()
+        protected override ReadResult<IReadConfigurationItem> ReadConfiguration()
         {
             try
             {
@@ -134,7 +134,7 @@
             }
         }
 
-        private ICalculationBase ProcessReadItem(IReadConfigurationItem readItem)
+        protected override ICalculationBase ProcessReadItem(IReadConfigurationItem readItem)
         {
             var readCalculationGroup = readItem as ReadCalculationGroup;
             if (readCalculationGroup != null)