Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/FileImporters/StabilityPointStructureReplaceStrategy.cs
===================================================================
diff -u
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/FileImporters/StabilityPointStructureReplaceStrategy.cs	(revision 0)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/FileImporters/StabilityPointStructureReplaceStrategy.cs	(revision 61d70c3a93405d74b984ebea39a0ecc746dc03f5)
@@ -0,0 +1,67 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Core.Common.Base;
+using Ringtoets.Common.Data;
+using Ringtoets.Common.Data.Structures;
+using Ringtoets.Common.Data.UpdateDataStrategies;
+using Ringtoets.Common.IO.Structures;
+using Ringtoets.Common.Service;
+using Ringtoets.StabilityPointStructures.Data;
+
+namespace Ringtoets.StabilityPointStructures.Plugin.FileImporters
+{
+    /// <summary>
+    /// An <see cref="ReplaceDataStrategyBase{TTargetData,TFailureMechanism}"/> 
+    /// to replace stability point structures with the imported stability point structures
+    /// </summary>
+    public class StabilityPointStructureReplaceStrategy : ReplaceDataStrategyBase<StabilityPointStructure, StabilityPointStructuresFailureMechanism>,
+                                                          IStructureUpdateStrategy<StabilityPointStructure>
+    {
+        /// <summary>
+        /// Creates a new instance of <see cref="StabilityPointStructureReplaceStrategy"/>.
+        /// </summary>
+        /// <param name="failureMechanism">The failure mechanism in which the 
+        /// <see cref="StabilityPointStructure"/> are updated.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanism"/>
+        /// is <c>null</c>.</exception>
+        public StabilityPointStructureReplaceStrategy(StabilityPointStructuresFailureMechanism failureMechanism)
+            : base(failureMechanism) {}
+
+        public IEnumerable<IObservable> UpdateStructuresWithImportedData(StructureCollection<StabilityPointStructure> targetDataCollection,
+                                                                         IEnumerable<StabilityPointStructure> readStructures,
+                                                                         string sourceFilePath)
+        {
+            return ReplaceTargetCollectionWithImportedData(targetDataCollection, readStructures, sourceFilePath);
+        }
+
+        protected override IEnumerable<IObservable> ClearData()
+        {
+            return RingtoetsCommonDataSynchronizationService.RemoveAllStructures(
+                FailureMechanism.Calculations.OfType<StructuresCalculation<StabilityPointStructuresInput>>(),
+                FailureMechanism.StabilityPointStructures,
+                FailureMechanism.SectionResults);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/Ringtoets.StabilityPointStructures.Plugin.csproj
===================================================================
diff -u -ra70cb733eb761229173777b9f6cd1b977830b24b -r61d70c3a93405d74b984ebea39a0ecc746dc03f5
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/Ringtoets.StabilityPointStructures.Plugin.csproj	(.../Ringtoets.StabilityPointStructures.Plugin.csproj)	(revision a70cb733eb761229173777b9f6cd1b977830b24b)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/Ringtoets.StabilityPointStructures.Plugin.csproj	(.../Ringtoets.StabilityPointStructures.Plugin.csproj)	(revision 61d70c3a93405d74b984ebea39a0ecc746dc03f5)
@@ -41,6 +41,7 @@
     <Compile Include="..\..\..\..\Core\Common\src\Core.Common.Version\GlobalAssembly.cs">
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
+    <Compile Include="FileImporters\StabilityPointStructureReplaceStrategy.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="StabilityPointStructuresPlugin.cs" />
   </ItemGroup>
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Plugin.Test/FileImporters/StabilityPointStructureReplaceDataStrategyTest.cs
===================================================================
diff -u
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Plugin.Test/FileImporters/StabilityPointStructureReplaceDataStrategyTest.cs	(revision 0)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Plugin.Test/FileImporters/StabilityPointStructureReplaceDataStrategyTest.cs	(revision 61d70c3a93405d74b984ebea39a0ecc746dc03f5)
@@ -0,0 +1,430 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Core.Common.Base;
+using Core.Common.Base.Geometry;
+using NUnit.Framework;
+using Ringtoets.Common.Data;
+using Ringtoets.Common.Data.Exceptions;
+using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
+using Ringtoets.Common.Data.UpdateDataStrategies;
+using Ringtoets.Common.IO.Structures;
+using Ringtoets.StabilityPointStructures.Data;
+using Ringtoets.StabilityPointStructures.Data.TestUtil;
+using Ringtoets.StabilityPointStructures.Plugin.FileImporters;
+
+namespace Ringtoets.StabilityPointStructures.Plugin.Test.FileImporters
+{
+    [TestFixture]
+    public class StabilityPointStructureReplaceDataStrategyTest
+    {
+        private const string sourcePath = "some/path/to/structures";
+
+        [Test]
+        public void Constructor_WithFailureMechanismNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => new StabilityPointStructureReplaceStrategy(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("failureMechanism", exception.ParamName);
+        }
+
+        [Test]
+        public void Constructor_WithFailureMechanism_CreatesNewInstance()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+
+            // Call
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Assert
+            Assert.IsInstanceOf<ReplaceDataStrategyBase<StabilityPointStructure,
+                StabilityPointStructuresFailureMechanism>>(strategy);
+            Assert.IsInstanceOf<IStructureUpdateStrategy<StabilityPointStructure>>(strategy);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_TargetDataCollectionNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            TestDelegate call = () => strategy.UpdateStructuresWithImportedData(
+                null,
+                Enumerable.Empty<StabilityPointStructure>(),
+                sourcePath);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("targetDataCollection", exception.ParamName);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_ImportedDataCollectionNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            TestDelegate call = () => strategy.UpdateStructuresWithImportedData(
+                new StructureCollection<StabilityPointStructure>(),
+                null,
+                sourcePath);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("importedDataCollection", exception.ParamName);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_SourceFilePathNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            TestDelegate call = () => strategy.UpdateStructuresWithImportedData(
+                new StructureCollection<StabilityPointStructure>(),
+                Enumerable.Empty<StabilityPointStructure>(),
+                null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("sourceFilePath", exception.ParamName);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_DifferentSourcePath_UpdatesSourcePath()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            var newSourcePath = "some/other/path/toStructures";
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                Enumerable.Empty<StabilityPointStructure>(),
+                newSourcePath);
+
+            // Assert
+            Assert.AreEqual(newSourcePath, targetCollection.SourcePath);
+            CollectionAssert.AreEqual(new[]
+            {
+                targetCollection
+            }, affectedObjects);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CurrentCollectionAndImportedCollectionEmpty_DoesNothing()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            var targetCollection = new StructureCollection<StabilityPointStructure>();
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                Enumerable.Empty<StabilityPointStructure>(),
+                sourcePath);
+
+            // Assert
+            CollectionAssert.IsEmpty(targetCollection);
+            CollectionAssert.AreEqual(new[]
+            {
+                targetCollection
+            }, affectedObjects);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_ImportedDataContainsDuplicateIds_ThrowsUpdateDataException()
+        {
+            // Setup
+            const string duplicateId = "I am a duplicate id";
+            StabilityPointStructure[] importedClosingStructures =
+            {
+                new TestStabilityPointStructure("name", duplicateId),
+                new TestStabilityPointStructure("Other name", duplicateId)
+            };
+
+            var targetCollection = new StructureCollection<StabilityPointStructure>();
+            var strategy = new StabilityPointStructureReplaceStrategy(new StabilityPointStructuresFailureMechanism());
+
+            // Call
+            TestDelegate call = () => strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                importedClosingStructures,
+                sourcePath);
+
+            // Assert
+            var exception = Assert.Throws<UpdateDataException>(call);
+            string expectedMessage = "Kunstwerken moeten een unieke id hebben. " +
+                                     $"Gevonden dubbele elementen: {duplicateId}.";
+            Assert.AreEqual(expectedMessage, exception.Message);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CurrentCollectionEmptyAndImportedCollectionNotEmpty_AddsNewStructures()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            var importedCollection = new[]
+            {
+                new TestStabilityPointStructure()
+            };
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                importedCollection,
+                sourcePath);
+
+            // Assert
+            Assert.AreEqual(sourcePath, targetCollection.SourcePath);
+            CollectionAssert.AreEqual(new[]
+            {
+                targetCollection
+            }, affectedObjects);
+            CollectionAssert.AreEqual(importedCollection, targetCollection);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CurrentCollectionNotEmptyAndImportedCollectionEmpty_ClearsCollection()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+            targetCollection.AddRange(new[]
+            {
+                new TestStabilityPointStructure()
+            }, sourcePath);
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                Enumerable.Empty<StabilityPointStructure>(),
+                sourcePath);
+
+            // Assert
+            Assert.AreEqual(sourcePath, targetCollection.SourcePath);
+            CollectionAssert.AreEqual(new[]
+            {
+                targetCollection
+            }, affectedObjects);
+            CollectionAssert.IsEmpty(targetCollection);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CurrentCollectionNotEmptyAndImportedCollectionNotEmpty_ReplacesCurrentWithImportedData()
+        {
+            // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+            targetCollection.AddRange(new[]
+            {
+                new TestStabilityPointStructure()
+            }, sourcePath);
+
+            var importedStructure = new TestStabilityPointStructure("a different id");
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                new[]
+                {
+                    importedStructure
+                },
+                sourcePath);
+
+            // Assert
+            CollectionAssert.AreEqual(new[]
+            {
+                targetCollection
+            }, affectedObjects);
+
+            var expectedCollection = new[]
+            {
+                importedStructure
+            };
+            CollectionAssert.AreEqual(expectedCollection, targetCollection);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CalculationWithoutOutputAndStructure_CalculationUpdatedAndReturnsAffectedObject()
+        {
+            // Setup
+            var structure = new TestStabilityPointStructure();
+            var calculation = new TestStabilityPointStructuresCalculation
+            {
+                InputParameters =
+                {
+                    Structure = structure
+                }
+            };
+
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            failureMechanism.CalculationsGroup.Children.Add(calculation);
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+            targetCollection.AddRange(new[]
+            {
+                structure
+            }, sourcePath);
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                Enumerable.Empty<StabilityPointStructure>(),
+                sourcePath);
+
+            // Assert
+            Assert.IsNull(calculation.InputParameters.Structure);
+            Assert.IsFalse(calculation.HasOutput);
+
+            CollectionAssert.IsEmpty(targetCollection);
+
+            CollectionAssert.AreEquivalent(new IObservable[]
+            {
+                calculation.InputParameters,
+                targetCollection
+            }, affectedObjects);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CalculationWithOutputAndStructure_CalculationUpdatedAndReturnsAffectedObject()
+        {
+            // Setup
+            var structure = new TestStabilityPointStructure();
+            var calculation = new TestStabilityPointStructuresCalculation
+            {
+                InputParameters =
+                {
+                    Structure = structure
+                },
+                Output = new TestStructuresOutput()
+            };
+
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            failureMechanism.CalculationsGroup.Children.Add(calculation);
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+            targetCollection.AddRange(new[]
+            {
+                structure
+            }, sourcePath);
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                Enumerable.Empty<StabilityPointStructure>(),
+                sourcePath);
+
+            // Assert
+            Assert.IsNull(calculation.InputParameters.Structure);
+            Assert.IsFalse(calculation.HasOutput);
+
+            CollectionAssert.IsEmpty(targetCollection);
+
+            CollectionAssert.AreEquivalent(new IObservable[]
+            {
+                calculation,
+                calculation.InputParameters,
+                targetCollection
+            }, affectedObjects);
+        }
+
+        [Test]
+        public void UpdateStructuresWithImportedData_CalculationWithSectionResultAndStructure_CalculationUpdatedAndReturnsAffectedObject()
+        {
+            // Setup
+            var location = new Point2D(12, 34);
+            var structure = new TestStabilityPointStructure(location);
+            var calculation = new TestStabilityPointStructuresCalculation
+            {
+                InputParameters =
+                {
+                    Structure = structure
+                }
+            };
+
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+            failureMechanism.CalculationsGroup.Children.Add(calculation);
+            failureMechanism.AddSection(new FailureMechanismSection("SectionResult", new[]
+            {
+                location
+            }));
+            StabilityPointStructuresFailureMechanismSectionResult sectionResult = failureMechanism.SectionResults.First();
+            sectionResult.Calculation = calculation;
+
+            StructureCollection<StabilityPointStructure> targetCollection = failureMechanism.StabilityPointStructures;
+            targetCollection.AddRange(new[]
+            {
+                structure
+            }, sourcePath);
+
+            var strategy = new StabilityPointStructureReplaceStrategy(failureMechanism);
+
+            // Call
+            IEnumerable<IObservable> affectedObjects = strategy.UpdateStructuresWithImportedData(
+                targetCollection,
+                Enumerable.Empty<StabilityPointStructure>(),
+                sourcePath);
+
+            // Assert
+            Assert.IsNull(calculation.InputParameters.Structure);
+            Assert.IsNull(sectionResult.Calculation);
+
+            CollectionAssert.IsEmpty(targetCollection);
+            CollectionAssert.AreEquivalent(new IObservable[]
+            {
+                sectionResult,
+                calculation.InputParameters,
+                targetCollection
+            }, affectedObjects);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Plugin.Test/Ringtoets.StabilityPointStructures.Plugin.Test.csproj
===================================================================
diff -u -rb3cd93a57114ffa27d177cabb8e4635dfc71955c -r61d70c3a93405d74b984ebea39a0ecc746dc03f5
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Plugin.Test/Ringtoets.StabilityPointStructures.Plugin.Test.csproj	(.../Ringtoets.StabilityPointStructures.Plugin.Test.csproj)	(revision b3cd93a57114ffa27d177cabb8e4635dfc71955c)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Plugin.Test/Ringtoets.StabilityPointStructures.Plugin.Test.csproj	(.../Ringtoets.StabilityPointStructures.Plugin.Test.csproj)	(revision 61d70c3a93405d74b984ebea39a0ecc746dc03f5)
@@ -61,6 +61,7 @@
     </Compile>
     <Compile Include="ExportInfos\StabilityPointStructuresCalculationContextExportInfoTest.cs" />
     <Compile Include="ExportInfos\StabilityPointStructuresCalculationGroupContextExportInfoTest.cs" />
+    <Compile Include="FileImporters\StabilityPointStructureReplaceDataStrategyTest.cs" />
     <Compile Include="ImportInfos\StabilityPointStructuresCalculationGroupContextImportInfoTest.cs" />
     <Compile Include="ImportInfos\StabilityPointStructuresContextImportInfoTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />