Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/AssessmentSectionMerger.cs
===================================================================
diff -u -r5b7ef79633668d91363a37f5451dfaa25df60e07 -r15c1d2fdc2e70b1d921cfb607ee2f650e69e42a2
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/AssessmentSectionMerger.cs	(.../AssessmentSectionMerger.cs)	(revision 5b7ef79633668d91363a37f5451dfaa25df60e07)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/AssessmentSectionMerger.cs	(.../AssessmentSectionMerger.cs)	(revision 15c1d2fdc2e70b1d921cfb607ee2f650e69e42a2)
@@ -22,7 +22,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Core.Common.Gui;
 using log4net;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data;
@@ -32,7 +31,6 @@
 using Ringtoets.Integration.Plugin.Properties;
 using Ringtoets.Integration.Service.Comparers;
 using CoreCommonGuiResources = Core.Common.Gui.Properties.Resources;
-using RingtoetsStorageResources = Ringtoets.Storage.Core.Properties.Resources;
 
 namespace Ringtoets.Integration.Plugin
 {
@@ -43,7 +41,7 @@
     {
         private static readonly ILog log = LogManager.GetLogger(typeof(AssessmentSectionMerger));
 
-        private readonly IInquiryHelper inquiryHandler;
+        private readonly IAssessmentSectionMergeFilePathProvider filePathProvider;
         private readonly Action<string, AssessmentSectionsOwner> getAssessmentSectionsAction;
         private readonly IAssessmentSectionMergeComparer comparer;
         private readonly IMergeDataProvider mergeDataProvider;
@@ -52,19 +50,19 @@
         /// <summary>
         /// Creates a new instance of <see cref="AssessmentSectionMerger"/>,
         /// </summary>
-        /// <param name="inquiryHandler">Object responsible for inquiring the required data.</param>
+        /// <param name="filePathProvider">The provider to get the file path of the file to merge.</param>
         /// <param name="getAssessmentSectionsAction">The action for getting the assessment sections
         /// to merge.</param>
         /// <param name="comparer">The comparer to compare the assessment sections with.</param>
         /// <param name="mergeDataProvider">The provider to get the data to merge from.</param>
         /// <param name="mergeHandler">The handler to perform the merge.</param>
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
-        public AssessmentSectionMerger(IInquiryHelper inquiryHandler, Action<string, AssessmentSectionsOwner> getAssessmentSectionsAction,
+        public AssessmentSectionMerger(IAssessmentSectionMergeFilePathProvider filePathProvider, Action<string, AssessmentSectionsOwner> getAssessmentSectionsAction,
                                        IAssessmentSectionMergeComparer comparer, IMergeDataProvider mergeDataProvider, IAssessmentSectionMergeHandler mergeHandler)
         {
-            if (inquiryHandler == null)
+            if (filePathProvider == null)
             {
-                throw new ArgumentNullException(nameof(inquiryHandler));
+                throw new ArgumentNullException(nameof(filePathProvider));
             }
 
             if (getAssessmentSectionsAction == null)
@@ -87,7 +85,7 @@
                 throw new ArgumentNullException(nameof(mergeHandler));
             }
 
-            this.inquiryHandler = inquiryHandler;
+            this.filePathProvider = filePathProvider;
             this.getAssessmentSectionsAction = getAssessmentSectionsAction;
             this.comparer = comparer;
             this.mergeDataProvider = mergeDataProvider;
@@ -107,7 +105,7 @@
                 throw new ArgumentNullException(nameof(assessmentSection));
             }
 
-            string filePath = SelectProject();
+            string filePath = filePathProvider.GetFilePath();
 
             if (filePath == null)
             {
@@ -154,11 +152,6 @@
             PerformMerge(assessmentSection, assessmentSectionToMerge, failureMechanismToMerge);
         }
 
-        private string SelectProject()
-        {
-            return inquiryHandler.GetSourceFileLocation(RingtoetsStorageResources.Ringtoets_project_file_filter);
-        }
-
         private IEnumerable<AssessmentSection> GetAssessmentSections(string filePath)
         {
             var assessmentSectionsOwner = new AssessmentSectionsOwner();
@@ -169,7 +162,7 @@
         private void PerformMerge(AssessmentSection assessmentSection, AssessmentSection assessmentSectionToMerge, IEnumerable<IFailureMechanism> failureMechanismToMerge)
         {
             log.InfoFormat(Resources.AssessmentSectionMerger_PerformMerge_Merging_AssessmentSection_0_with_AssessmentSection_1_started,
-                assessmentSectionToMerge.Name, assessmentSection.Name);
+                           assessmentSectionToMerge.Name, assessmentSection.Name);
 
             try
             {
@@ -183,7 +176,6 @@
             }
         }
 
-
         private static void LogCancelMessage()
         {
             log.Info(CoreCommonGuiResources.GuiImportHandler_ImportItemsUsingDialog_Importing_cancelled);
Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs
===================================================================
diff -u -r6a408a0c806e8f01025d719542993ce75c3c3211 -r15c1d2fdc2e70b1d921cfb607ee2f650e69e42a2
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs	(.../RingtoetsPlugin.cs)	(revision 6a408a0c806e8f01025d719542993ce75c3c3211)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs	(.../RingtoetsPlugin.cs)	(revision 15c1d2fdc2e70b1d921cfb607ee2f650e69e42a2)
@@ -278,7 +278,7 @@
 
             assessmentSectionFromFileCommandHandler = new AssessmentSectionFromFileCommandHandler(Gui.MainWindow, Gui, Gui.DocumentViewController);
             hydraulicBoundaryLocationCalculationGuiService = new HydraulicBoundaryLocationCalculationGuiService(Gui.MainWindow);
-            assessmentSectionMerger = new AssessmentSectionMerger(new DialogBasedInquiryHelper(Gui.MainWindow),
+            assessmentSectionMerger = new AssessmentSectionMerger(new AssessmentSectionMergeFilePathProvider(new DialogBasedInquiryHelper(Gui.MainWindow)),
                                                                   (filePath, assessmentSectionOwner) =>
                                                                   {
                                                                       ActivityProgressDialogRunner.Run(Gui.MainWindow,
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/AssessmentSectionMergerTest.cs
===================================================================
diff -u -r5b7ef79633668d91363a37f5451dfaa25df60e07 -r15c1d2fdc2e70b1d921cfb607ee2f650e69e42a2
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/AssessmentSectionMergerTest.cs	(.../AssessmentSectionMergerTest.cs)	(revision 5b7ef79633668d91363a37f5451dfaa25df60e07)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/AssessmentSectionMergerTest.cs	(.../AssessmentSectionMergerTest.cs)	(revision 15c1d2fdc2e70b1d921cfb607ee2f650e69e42a2)
@@ -21,7 +21,6 @@
 
 using System;
 using System.Linq;
-using Core.Common.Gui;
 using Core.Common.TestUtil;
 using log4net.Core;
 using NUnit.Framework;
@@ -40,7 +39,7 @@
     public class AssessmentSectionMergerTest
     {
         [Test]
-        public void Constructor_InquiryHandlerNull_ThrowsArgumentNullException()
+        public void Constructor_FilePathProviderNull_ThrowsArgumentNullException()
         {
             // Setup
             var mocks = new MockRepository();
@@ -54,7 +53,7 @@
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
-            Assert.AreEqual("inquiryHandler", exception.ParamName);
+            Assert.AreEqual("filePathProvider", exception.ParamName);
             mocks.VerifyAll();
         }
 
@@ -63,14 +62,14 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
             // Call
-            TestDelegate call = () => new AssessmentSectionMerger(inquiryHelper, null, comparer, mergeDataProvider, mergeHandler);
+            TestDelegate call = () => new AssessmentSectionMerger(filePathProvider, null, comparer, mergeDataProvider, mergeHandler);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -83,13 +82,13 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
             // Call
-            TestDelegate call = () => new AssessmentSectionMerger(inquiryHelper, (path, owner) => {}, null, mergeDataProvider, mergeHandler);
+            TestDelegate call = () => new AssessmentSectionMerger(filePathProvider, (path, owner) => {}, null, mergeDataProvider, mergeHandler);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -102,13 +101,13 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
             // Call
-            TestDelegate call = () => new AssessmentSectionMerger(inquiryHelper, (path, owner) => {}, comparer, null, mergeHandler);
+            TestDelegate call = () => new AssessmentSectionMerger(filePathProvider, (path, owner) => {}, comparer, null, mergeHandler);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -121,13 +120,13 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             mocks.ReplayAll();
 
             // Call
-            TestDelegate call = () => new AssessmentSectionMerger(inquiryHelper, (path, owner) => {}, comparer, mergeDataProvider, null);
+            TestDelegate call = () => new AssessmentSectionMerger(filePathProvider, (path, owner) => {}, comparer, mergeDataProvider, null);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -140,13 +139,13 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, (path, owner) => {}, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, (path, owner) => {}, comparer, mergeDataProvider, mergeHandler);
 
             // Call
             TestDelegate call = () => merger.StartMerge(null);
@@ -162,14 +161,14 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(null);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(null);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, (path, owner) => {}, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, (path, owner) => {}, comparer, mergeDataProvider, mergeHandler);
 
             // Call
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -184,14 +183,14 @@
         {
             // Given
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, (path, owner) => {}, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, (path, owner) => {}, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -206,16 +205,16 @@
         {
             // Given
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
             var mergeHandler = mocks.StrictMock<IAssessmentSectionMergeHandler>();
             mocks.ReplayAll();
 
             Action<string, AssessmentSectionsOwner> getAssessmentSectionsAction = (path, owner) => { owner.AssessmentSections = Enumerable.Empty<AssessmentSection>(); };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -230,8 +229,8 @@
         {
             // Given
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             comparer.Expect(c => c.Compare(null, null)).IgnoreArguments().Return(false);
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
@@ -246,7 +245,7 @@
                 };
             };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -261,8 +260,8 @@
         {
             // Given
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             comparer.Expect(c => c.Compare(null, null)).IgnoreArguments().Return(true);
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
@@ -278,7 +277,7 @@
                 };
             };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -293,8 +292,8 @@
         {
             // Given
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             comparer.Expect(c => c.Compare(null, null)).IgnoreArguments().Return(true);
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
@@ -312,7 +311,7 @@
                 };
             };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -327,8 +326,8 @@
         {
             // Given
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             comparer.Expect(c => c.Compare(null, null)).IgnoreArguments().Return(true);
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
@@ -346,7 +345,7 @@
                 };
             };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(new AssessmentSection(AssessmentSectionComposition.Dike));
@@ -368,8 +367,8 @@
             };
 
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             comparer.Expect(c => c.Compare(originalAssessmentSection, assessmentSectionToMerge)).Return(true);
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
@@ -388,7 +387,7 @@
                 };
             };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(originalAssessmentSection);
@@ -416,8 +415,8 @@
             };
 
             var mocks = new MockRepository();
-            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
-            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var filePathProvider = mocks.StrictMock<IAssessmentSectionMergeFilePathProvider>();
+            filePathProvider.Expect(helper => helper.GetFilePath()).Return(string.Empty);
             var comparer = mocks.StrictMock<IAssessmentSectionMergeComparer>();
             comparer.Expect(c => c.Compare(originalAssessmentSection, assessmentSectionToMerge)).Return(true);
             var mergeDataProvider = mocks.StrictMock<IMergeDataProvider>();
@@ -436,7 +435,7 @@
                 };
             };
 
-            var merger = new AssessmentSectionMerger(inquiryHelper, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
+            var merger = new AssessmentSectionMerger(filePathProvider, getAssessmentSectionsAction, comparer, mergeDataProvider, mergeHandler);
 
             // When
             Action call = () => merger.StartMerge(originalAssessmentSection);