Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Importers/HydraulicBoundaryDatabaseImporter.cs
===================================================================
diff -u -rcfc663ba43f203e8e268f5527c4fa298aa3b6cde -rfd12ada286ef8af1248a9d6100410dfeb15e9669
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Importers/HydraulicBoundaryDatabaseImporter.cs	(.../HydraulicBoundaryDatabaseImporter.cs)	(revision cfc663ba43f203e8e268f5527c4fa298aa3b6cde)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Importers/HydraulicBoundaryDatabaseImporter.cs	(.../HydraulicBoundaryDatabaseImporter.cs)	(revision fd12ada286ef8af1248a9d6100410dfeb15e9669)
@@ -1,4 +1,4 @@
-// Copyright (C) Stichting Deltares 2018. All rights reserved.
+// Copyright (C) Stichting Deltares 2018. All rights reserved.
 //
 // This file is part of Ringtoets.
 //
@@ -58,14 +58,18 @@
 
         protected override void LogImportCanceledMessage()
         {
-            throw new System.NotImplementedException();
+            Log.Info(Resources.HydraulicBoundaryDatabaseImporter_ProgressText_Import_canceled_No_data_changed);
         }
 
         protected override bool OnImport()
         {
             ReadResult<ReadHydraulicBoundaryDatabase> readResult = ReadHydraulicBoundaryDatabase();
+            if (readResult.CriticalErrorOccurred || Canceled)
+            {
+                return false;
+            }
 
-            return !readResult.CriticalErrorOccurred;
+            return true;
         }
 
         private ReadResult<ReadHydraulicBoundaryDatabase> ReadHydraulicBoundaryDatabase()
Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.Designer.cs
===================================================================
diff -u -rcfc663ba43f203e8e268f5527c4fa298aa3b6cde -rfd12ada286ef8af1248a9d6100410dfeb15e9669
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision cfc663ba43f203e8e268f5527c4fa298aa3b6cde)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision fd12ada286ef8af1248a9d6100410dfeb15e9669)
@@ -122,6 +122,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Hydraulische belastingen database koppelen afgebroken. Geen gegevens gewijzigd..
+        /// </summary>
+        internal static string HydraulicBoundaryDatabaseImporter_ProgressText_Import_canceled_No_data_changed {
+            get {
+                return ResourceManager.GetString("HydraulicBoundaryDatabaseImporter_ProgressText_Import_canceled_No_data_changed", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Inlezen van het hydraulische belastingen bestand..
         /// </summary>
         internal static string HydraulicBoundaryDatabaseImporter_ReadHydraulicBoundaryDatabase_Read_HRD_file {
Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.resx
===================================================================
diff -u -rcfc663ba43f203e8e268f5527c4fa298aa3b6cde -rfd12ada286ef8af1248a9d6100410dfeb15e9669
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.resx	(.../Resources.resx)	(revision cfc663ba43f203e8e268f5527c4fa298aa3b6cde)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.resx	(.../Resources.resx)	(revision fd12ada286ef8af1248a9d6100410dfeb15e9669)
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
@@ -160,4 +160,7 @@
     <value>{0}
 Er is geen hydraulische belastingen database gekoppeld.</value>
   </data>
+  <data name="HydraulicBoundaryDatabaseImporter_ProgressText_Import_canceled_No_data_changed" xml:space="preserve">
+    <value>Hydraulische belastingen database koppelen afgebroken. Geen gegevens gewijzigd.</value>
+  </data>
 </root>
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Importers/HydraulicBoundaryDatabaseImporterTest.cs
===================================================================
diff -u -rcfc663ba43f203e8e268f5527c4fa298aa3b6cde -rfd12ada286ef8af1248a9d6100410dfeb15e9669
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Importers/HydraulicBoundaryDatabaseImporterTest.cs	(.../HydraulicBoundaryDatabaseImporterTest.cs)	(revision cfc663ba43f203e8e268f5527c4fa298aa3b6cde)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Importers/HydraulicBoundaryDatabaseImporterTest.cs	(.../HydraulicBoundaryDatabaseImporterTest.cs)	(revision fd12ada286ef8af1248a9d6100410dfeb15e9669)
@@ -134,5 +134,37 @@
             // Assert
             Assert.IsTrue(importResult);
         }
+
+        [Test]
+        public void Import_CancelOfImportWhenReadingHydraulicBoundaryDatabase_CancelsImportAndLogs()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var handler = mocks.StrictMock<IHydraulicBoundaryDatabaseUpdateHandler>();
+            mocks.ReplayAll();
+
+            string filePath = Path.Combine(testDataPath, "complete.sqlite");
+            var importer = new HydraulicBoundaryDatabaseImporter(new HydraulicBoundaryDatabase(), handler, filePath);
+            importer.SetProgressChanged((description, step, steps) =>
+            {
+                if (description.Contains("Inlezen van het hydraulische belastingen bestand."))
+                {
+                    importer.Cancel();
+                }
+            });
+
+            // Precondition
+            Assert.IsTrue(File.Exists(filePath));
+
+            var importResult = true;
+
+            // Call
+            Action call = () => importResult = importer.Import();
+
+            // Assert
+            Tuple<string, LogLevelConstant> expectedLogMessage = Tuple.Create("Hydraulische belastingen database koppelen afgebroken. Geen gegevens gewijzigd.", LogLevelConstant.Info);
+            TestHelper.AssertLogMessageWithLevelIsGenerated(call, expectedLogMessage, 1);
+            Assert.IsFalse(importResult);
+        }
     }
 }
\ No newline at end of file