Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs
===================================================================
diff -u -ra8557d0292f7cca077c69756d6b3511385da6c77 -r06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision a8557d0292f7cca077c69756d6b3511385da6c77)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7)
@@ -23,6 +23,7 @@
 using System.Collections;
 using System.Collections.Generic;
 using System.Drawing;
+using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 using Core.Common.Base;
@@ -33,6 +34,7 @@
 using Core.Common.Gui.Forms;
 using Core.Common.Gui.Forms.ProgressDialog;
 using Core.Common.Gui.Plugin;
+using log4net;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -61,6 +63,8 @@
     /// </summary>
     public class PipingPlugin : PluginBase
     {
+        private readonly ILog log = LogManager.GetLogger(typeof(PipingPlugin));
+
         public override IRibbonCommandHandler RibbonCommandHandler
         {
             get
@@ -515,22 +519,60 @@
         private StrictContextMenuItem CreateUpdateStochasticSoilModelsItem(StochasticSoilModelCollection soilModelCollection, PipingFailureMechanism failureMechanism)
         {
             return new StrictContextMenuItem(
-                "&Bijwerken...",
-                "Werk de reeds bekende lijst van stochastische ondergrondmodellen bij.",
+                PipingPluginResources.PipingPlugin_UpdateStochasticSoilModelsMenuItem_Text,
+                PipingPluginResources.PipingPlugin_UpdateStochasticSoilModelsMenuItem_ToolTip,
                 PipingPluginResources.RefreshIcon,
-                (sender, args) =>
-                {
-                    var importer = new StochasticSoilModelImporter(soilModelCollection,
-                                                    soilModelCollection.SourcePath,
-                                                    new StochasticSoilModelUpdateData(failureMechanism));
-                    var activity = new FileImportActivity(importer, "Bijwerken van stochastische ondergrondmodellen.");
-                    ActivityProgressDialogRunner.Run(Gui.MainWindow, activity);
-                })
+                (sender, args) => UpdateStochasticSoilModelFromKnownSourceFile(soilModelCollection, failureMechanism))
             {
                 Enabled = soilModelCollection.SourcePath != null
             };
         }
 
+        private void UpdateStochasticSoilModelFromKnownSourceFile(StochasticSoilModelCollection soilModelCollection, PipingFailureMechanism failureMechanism)
+        {
+            string updateFromPath = soilModelCollection.SourcePath;
+            if (!File.Exists(updateFromPath))
+            {
+                updateFromPath = InquireUserForNewPath();
+            }
+
+            if (updateFromPath != null)
+            {
+                RunUpdateStochasticSoilModel(soilModelCollection, failureMechanism, updateFromPath);
+            }
+            else
+            {
+                log.Info(string.Format(
+                    PipingPluginResources.PipingPlugin_UpdateStochasticSoilModels_Update_of_StochasticSoilModels_from_File_0_canceled_by_user, 
+                    soilModelCollection.SourcePath));
+            }
+        }
+
+        private string InquireUserForNewPath()
+        {
+            var openFileDialog = new OpenFileDialog
+            {
+                Multiselect = false,
+                Title = PipingPluginResources.PipingPlugin_UpdateStochasticSoilModelsFileDialog_Title,
+                Filter = $"{PipingPluginResources.Soil_file_name} (*.soil)|*.soil"
+            };
+            if (openFileDialog.ShowDialog(Gui.MainWindow) == DialogResult.OK)
+            {
+                return openFileDialog.FileName;
+            }
+            return null;
+        }
+
+        private void RunUpdateStochasticSoilModel(StochasticSoilModelCollection soilModelCollection, PipingFailureMechanism failureMechanism, string sourceFilePath)
+        {
+            var importer = new StochasticSoilModelImporter(soilModelCollection,
+                                                           sourceFilePath,
+                                                           new StochasticSoilModelUpdateData(failureMechanism));
+
+            var activity = new FileImportActivity(importer, PipingPluginResources.PipingPlugin_RunUpdateStochasticSoilModel_Update_StochasticSoilModels);
+            ActivityProgressDialogRunner.Run(Gui.MainWindow, activity);
+        }
+
         #endregion
 
         #region RingtoetsPipingSurfaceLine TreeNodeInfo
Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/Properties/Resources.Designer.cs
===================================================================
diff -u -r673bf2f4f4de6006444aae3a10183f9442eb0f23 -r06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 673bf2f4f4de6006444aae3a10183f9442eb0f23)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7)
@@ -82,6 +82,52 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Bijwerken van stochastische ondergrondmodellen..
+        /// </summary>
+        public static string PipingPlugin_RunUpdateStochasticSoilModel_Update_StochasticSoilModels {
+            get {
+                return ResourceManager.GetString("PipingPlugin_RunUpdateStochasticSoilModel_Update_StochasticSoilModels", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Bijwerken van ondergrondschematisaties in &apos;{0}&apos; is door de gebruiker geannuleerd..
+        /// </summary>
+        public static string PipingPlugin_UpdateStochasticSoilModels_Update_of_StochasticSoilModels_from_File_0_canceled_by_user {
+            get {
+                return ResourceManager.GetString("PipingPlugin_UpdateStochasticSoilModels_Update_of_StochasticSoilModels_from_File_" +
+                        "0_canceled_by_user", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Selecteer de nieuwe locatie van het geïmporteerde bestand.
+        /// </summary>
+        public static string PipingPlugin_UpdateStochasticSoilModelsFileDialog_Title {
+            get {
+                return ResourceManager.GetString("PipingPlugin_UpdateStochasticSoilModelsFileDialog_Title", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to &amp;Bijwerken....
+        /// </summary>
+        public static string PipingPlugin_UpdateStochasticSoilModelsMenuItem_Text {
+            get {
+                return ResourceManager.GetString("PipingPlugin_UpdateStochasticSoilModelsMenuItem_Text", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Werk de reeds bekende lijst van stochastische ondergrondmodellen bij..
+        /// </summary>
+        public static string PipingPlugin_UpdateStochasticSoilModelsMenuItem_ToolTip {
+            get {
+                return ResourceManager.GetString("PipingPlugin_UpdateStochasticSoilModelsMenuItem_ToolTip", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Het stochastische ondergrondmodel &apos;{0}&apos; bestaat al in het toetsspoor..
         /// </summary>
         public static string PipingSoilProfilesImporter_AddImportedDataToModel_Stochastisch_soil_model_0_already_exists {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/Properties/Resources.resx
===================================================================
diff -u -r673bf2f4f4de6006444aae3a10183f9442eb0f23 -r06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/Properties/Resources.resx	(.../Resources.resx)	(revision 673bf2f4f4de6006444aae3a10183f9442eb0f23)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/Properties/Resources.resx	(.../Resources.resx)	(revision 06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7)
@@ -237,4 +237,19 @@
   <data name="RefreshIcon" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\table_refresh.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="PipingPlugin_RunUpdateStochasticSoilModel_Update_StochasticSoilModels" xml:space="preserve">
+    <value>Bijwerken van stochastische ondergrondmodellen.</value>
+  </data>
+  <data name="PipingPlugin_UpdateStochasticSoilModels_Update_of_StochasticSoilModels_from_File_0_canceled_by_user" xml:space="preserve">
+    <value>Bijwerken van ondergrondschematisaties in '{0}' is door de gebruiker geannuleerd.</value>
+  </data>
+  <data name="PipingPlugin_UpdateStochasticSoilModelsMenuItem_Text" xml:space="preserve">
+    <value>&amp;Bijwerken...</value>
+  </data>
+  <data name="PipingPlugin_UpdateStochasticSoilModelsMenuItem_ToolTip" xml:space="preserve">
+    <value>Werk de reeds bekende lijst van stochastische ondergrondmodellen bij.</value>
+  </data>
+  <data name="PipingPlugin_UpdateStochasticSoilModelsFileDialog_Title" xml:space="preserve">
+    <value>Selecteer de nieuwe locatie van het geïmporteerde bestand</value>
+  </data>
 </root>
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/TreeNodeInfos/StochasticSoilModelCollectionContextTreeNodeInfoTest.cs
===================================================================
diff -u -r673bf2f4f4de6006444aae3a10183f9442eb0f23 -r06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/TreeNodeInfos/StochasticSoilModelCollectionContextTreeNodeInfoTest.cs	(.../StochasticSoilModelCollectionContextTreeNodeInfoTest.cs)	(revision 673bf2f4f4de6006444aae3a10183f9442eb0f23)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/TreeNodeInfos/StochasticSoilModelCollectionContextTreeNodeInfoTest.cs	(.../StochasticSoilModelCollectionContextTreeNodeInfoTest.cs)	(revision 06d2a1e1525e818b3e71c4bcd61778e1ef4b2df7)
@@ -19,13 +19,21 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Collections.Generic;
 using System.Drawing;
+using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Windows.Forms;
 using Core.Common.Controls.TreeView;
 using Core.Common.Gui;
+using Core.Common.Gui.Commands;
 using Core.Common.Gui.ContextMenu;
+using Core.Common.Gui.Forms.MainWindow;
+using Core.Common.Gui.TestUtil.ContextMenu;
 using Core.Common.TestUtil;
+using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Rhino.Mocks;
 using Ringtoets.Common.Data.AssessmentSection;
@@ -34,12 +42,15 @@
 using Ringtoets.Piping.Forms.Properties;
 using Ringtoets.Piping.Primitives;
 using RingtoetsCommonFormsResources = Ringtoets.Common.Forms.Properties.Resources;
+using RingtoetsPipingPluginResources = Ringtoets.Piping.Plugin.Properties.Resources;
 
 namespace Ringtoets.Piping.Plugin.Test.TreeNodeInfos
 {
     [TestFixture]
-    public class StochasticSoilModelCollectionContextTreeNodeInfoTest
+    public class StochasticSoilModelCollectionContextTreeNodeInfoTest : NUnitFormTest
     {
+        private const int updateStochasticSoilModelsItemIndex = 1;
+
         private MockRepository mocks;
         private PipingPlugin plugin;
         private TreeNodeInfo info;
@@ -252,12 +263,209 @@
 
                 plugin.Gui = gui;
 
-
                 // Call
                 info.ContextMenuStrip(context, null, treeViewControl);
             }
             // Assert
             // Assert expectancies are called in TearDown()
         }
+
+        [Test]
+        [TestCase(false)]
+        [TestCase(true)]
+        public void ContextMenuStrip_WithOrWithoutPathToSoilModelsSource_UpdateStochasticSoilModelsItemEnabledWhenPathSet(bool sourcePathSet)
+        {
+            // Setup
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var pipingFailureMechanism = new PipingFailureMechanism();
+                var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
+
+                var stochasticSoilModelCollection = new StochasticSoilModelCollection();
+                if (sourcePathSet)
+                {
+                    stochasticSoilModelCollection.AddRange(Enumerable.Empty<StochasticSoilModel>(), "some path");
+                }
+
+                var nodeData = new StochasticSoilModelCollectionContext(stochasticSoilModelCollection,
+                                                                 pipingFailureMechanism,
+                                                                 assessmentSectionMock);
+
+                var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+                var gui = mocks.StrictMock<IGui>();
+                gui.Expect(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(cmp => cmp.ViewCommands).Return(mocks.Stub<IViewCommands>());
+
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                // Call
+                using (ContextMenuStrip menu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Assert
+                    TestHelper.AssertContextMenuStripContainsItem(menu, updateStochasticSoilModelsItemIndex,
+                                                                  RingtoetsPipingPluginResources.PipingPlugin_UpdateStochasticSoilModelsMenuItem_Text,
+                                                                  RingtoetsPipingPluginResources.PipingPlugin_UpdateStochasticSoilModelsMenuItem_ToolTip,
+                                                                  RingtoetsPipingPluginResources.RefreshIcon,
+                                                                  sourcePathSet);
+                }
+            }
+        }
+
+        [Test]
+        [Apartment(ApartmentState.STA)]
+        public void ContextMenuStrip_ClickOnUpdateStochasticSoilModelsItemCancelClicked_OpenFileDialogShownCancelMessageLogged()
+        {
+            // Setup
+            const string somePath = "some path";
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var pipingFailureMechanism = new PipingFailureMechanism();
+                var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
+                var stochasticSoilModelCollection = new StochasticSoilModelCollection();
+                stochasticSoilModelCollection.AddRange(Enumerable.Empty<StochasticSoilModel>(), somePath);
+
+                var nodeData = new StochasticSoilModelCollectionContext(stochasticSoilModelCollection,
+                                                                 pipingFailureMechanism,
+                                                                 assessmentSectionMock);
+
+                var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+                var gui = mocks.StrictMock<IGui>();
+                gui.Expect(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(cmp => cmp.ViewCommands).Return(mocks.Stub<IViewCommands>());
+
+                var mainWindow = mocks.Stub<IMainWindow>();
+                gui.Expect(g => g.MainWindow).Return(mainWindow);
+
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                DialogBoxHandler = (name, wnd) =>
+                {
+                    var window = new OpenFileDialogTester(wnd);
+                    window.ClickCancel();
+                };
+
+                using (ContextMenuStrip menu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Call
+                    Action test = () => menu.Items[updateStochasticSoilModelsItemIndex].PerformClick();
+
+                    // Assert
+                    TestHelper.AssertLogMessageIsGenerated(
+                        test, 
+                        $"Bijwerken van ondergrondschematisaties in '{somePath}' is door de gebruiker geannuleerd.");
+                }
+            }
+        }
+
+        [Test]
+        [Apartment(ApartmentState.STA)]
+        public void ContextMenuStrip_ClickOnUpdateStochasticSoilModelsWithNonExistingSourceFilePathItemOkClicked_OpenFileDialogShownSuccessMessageLogged()
+        {
+            // Setup
+            const string somePath = "some path";
+            string testDirectory = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "StochasticSoilModelDatabaseReader");
+            string existingFilePath = Path.Combine(testDirectory, "emptyschema.soil");
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var pipingFailureMechanism = new PipingFailureMechanism();
+                var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
+                var stochasticSoilModelCollection = new StochasticSoilModelCollection();
+                stochasticSoilModelCollection.AddRange(Enumerable.Empty<StochasticSoilModel>(), somePath);
+
+                var nodeData = new StochasticSoilModelCollectionContext(stochasticSoilModelCollection,
+                                                                 pipingFailureMechanism,
+                                                                 assessmentSectionMock);
+
+                var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+                var gui = mocks.StrictMock<IGui>();
+                gui.Expect(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(cmp => cmp.ViewCommands).Return(mocks.Stub<IViewCommands>());
+
+                var mainWindow = mocks.Stub<IMainWindow>();
+                gui.Stub(g => g.MainWindow).Return(mainWindow);
+
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                DialogBoxHandler = (name, wnd) =>
+                {
+                    var window = new OpenFileDialogTester(wnd);
+                    DialogBoxHandler = (s, hWnd) =>
+                    {
+                    };
+                    window.OpenFile(existingFilePath);
+                };
+
+                using (ContextMenuStrip menu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Call
+                    Action test = () => menu.Items[updateStochasticSoilModelsItemIndex].PerformClick();
+
+                    // Assert
+                    TestHelper.AssertLogMessageIsGenerated(
+                        test,
+                        "Uitvoeren van 'Bijwerken van stochastische ondergrondmodellen.' is gelukt.");
+                }
+            }
+        }
+
+        [Test]
+        [Apartment(ApartmentState.STA)]
+        public void ContextMenuStrip_ClickOnUpdateStochasticSoilModelsWithExistingSourceFilePath_SuccessMessageLogged()
+        {
+            // Setup
+            string testDirectory = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Piping.IO, "StochasticSoilModelDatabaseReader");
+            string existingFilePath = Path.Combine(testDirectory, "emptyschema.soil");
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                var pipingFailureMechanism = new PipingFailureMechanism();
+                var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
+                var stochasticSoilModelCollection = new StochasticSoilModelCollection();
+                stochasticSoilModelCollection.AddRange(Enumerable.Empty<StochasticSoilModel>(), existingFilePath);
+
+                var nodeData = new StochasticSoilModelCollectionContext(stochasticSoilModelCollection,
+                                                                 pipingFailureMechanism,
+                                                                 assessmentSectionMock);
+
+                var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+                var gui = mocks.StrictMock<IGui>();
+                gui.Expect(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
+                gui.Stub(cmp => cmp.ViewCommands).Return(mocks.Stub<IViewCommands>());
+
+                var mainWindow = mocks.Stub<IMainWindow>();
+                gui.Stub(g => g.MainWindow).Return(mainWindow);
+
+                mocks.ReplayAll();
+
+                plugin.Gui = gui;
+
+                DialogBoxHandler = (s, hWnd) =>
+                {
+                    // Activity dialog closes by itself
+                };
+
+                using (ContextMenuStrip menu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Call
+                    Action test = () => menu.Items[updateStochasticSoilModelsItemIndex].PerformClick();
+
+                    // Assert
+                    TestHelper.AssertLogMessageIsGenerated(
+                        test,
+                        "Uitvoeren van 'Bijwerken van stochastische ondergrondmodellen.' is gelukt.");
+                }
+            }
+        }
     }
 }
\ No newline at end of file