Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.IO.Test/StabilityPointStructuresImporterTest.cs
===================================================================
diff -u -rff948d4633181ead2677ab35467a93b4118c6751 -r96708dc3012a1398efc8829a487369abc24a64c1
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.IO.Test/StabilityPointStructuresImporterTest.cs	(.../StabilityPointStructuresImporterTest.cs)	(revision ff948d4633181ead2677ab35467a93b4118c6751)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.IO.Test/StabilityPointStructuresImporterTest.cs	(.../StabilityPointStructuresImporterTest.cs)	(revision 96708dc3012a1398efc8829a487369abc24a64c1)
@@ -220,7 +220,7 @@
         {
             // Setup
             string filePath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.StabilityPointStructures.IO,
-                                                         Path.Combine(nameof(StabilityPointStructuresImporter), "Kunstwerken.shp"));
+                                                         Path.Combine(nameof(StabilityPointStructuresImporter), "MissingParameters", "Kunstwerken.shp"));
 
             ReferenceLine referenceLine = CreateReferenceLine();
 
@@ -262,6 +262,45 @@
             DistributionAssert.AreEqual(defaultStructure.AreaFlowApertures, importedStructure.AreaFlowApertures);
         }
 
+        [Test]
+        public void Import_ImportingAlreadyExistingStructures_LogAndTrue()
+        {
+            // Setup
+            string filePath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.StabilityPointStructures.IO,
+                                                         Path.Combine(nameof(StabilityPointStructuresImporter), "SeveralStructures", "kunstwerken_12_2_punt.shp"));
+
+            var referencePoints = new List<Point2D>
+            {
+                new Point2D(136097.939, 534563.258),
+                new Point2D(136196.307, 540654.202),
+                new Point2D(133749.164, 545531.441),
+                new Point2D(131415.385, 548340.305)
+            };
+            var referenceLine = new ReferenceLine();
+            referenceLine.SetGeometry(referencePoints);
+
+            var importTarget = new ObservableList<StabilityPointStructure>();
+            var structuresImporter = new StabilityPointStructuresImporter(importTarget, referenceLine, filePath);
+            structuresImporter.Import();
+            importTarget.RemoveAt(2);
+
+            var importResult = false;
+
+            // Call
+            Action call = () => importResult = structuresImporter.Import();
+
+            // Assert
+            var expectedMessages = new[]
+            {
+                Tuple.Create("Kunstwerk 'KWK_1' is al geïmporteerd en wordt overgeslagen.", LogLevelConstant.Warn),
+                Tuple.Create("Kunstwerk 'KWK_2' is al geïmporteerd en wordt overgeslagen.", LogLevelConstant.Warn),
+                Tuple.Create("Kunstwerk 'KWK_4' is al geïmporteerd en wordt overgeslagen.", LogLevelConstant.Warn),
+            };
+            TestHelper.AssertLogMessagesWithLevelAreGenerated(call, expectedMessages, 3);
+            Assert.IsTrue(importResult);
+            Assert.AreEqual(4, importTarget.Count);
+        }
+
         private static ReferenceLine CreateReferenceLine()
         {
             var referencePoints = new List<Point2D>