Index: Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.IO/Factories/PersistableStateFactory.cs
===================================================================
diff -u -rd87bd516fe235ff936cf4fc25e04a88216861a56 -r254879576a8e47483035335ff6deef1b28e1b832
--- Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.IO/Factories/PersistableStateFactory.cs	(.../PersistableStateFactory.cs)	(revision d87bd516fe235ff936cf4fc25e04a88216861a56)
+++ Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.IO/Factories/PersistableStateFactory.cs	(.../PersistableStateFactory.cs)	(revision 254879576a8e47483035335ff6deef1b28e1b832)
@@ -82,11 +82,19 @@
                                            .Select(l => CreatePOPStatePoint(l, stageType, idFactory, registry))
                                            .ToArray());
 
-                statePoints.AddRange(soilProfile.PreconsolidationStresses.Select(
-                                                    pcs => CreateYieldStressStatePoint(
-                                                        GetLayerForPreconsolidationStress(layers, pcs),
-                                                        pcs, stageType, idFactory, registry))
-                                                .ToArray());
+                var preconsolidationStressPoints = new List<PersistableStatePoint>();
+
+                foreach (IMacroStabilityInwardsPreconsolidationStress preconsolidationStress in soilProfile.PreconsolidationStresses)
+                {
+                    MacroStabilityInwardsSoilLayer2D layer = GetLayerForPreconsolidationStress(layers, preconsolidationStress);
+                    if (layer != null)
+                    {
+                        preconsolidationStressPoints.Add(
+                            CreateYieldStressStatePoint(layer, preconsolidationStress, stageType, idFactory, registry));
+                    }
+                }
+
+                statePoints.AddRange(preconsolidationStressPoints);
             }
 
             var state = new PersistableState
@@ -103,10 +111,10 @@
 
         private static MacroStabilityInwardsSoilLayer2D GetLayerForPreconsolidationStress(IEnumerable<MacroStabilityInwardsSoilLayer2D> layers, IMacroStabilityInwardsPreconsolidationStress pcs)
         {
-            return layers.Single(l => AdvancedMath2D.PointInPolygon(
-                                     pcs.Location,
-                                     l.OuterRing.Points,
-                                     l.NestedLayers.Select(nl => nl.OuterRing.Points)));
+            return layers.SingleOrDefault(l => AdvancedMath2D.PointInPolygon(
+                                              pcs.Location,
+                                              l.OuterRing.Points,
+                                              l.NestedLayers.Select(nl => nl.OuterRing.Points)));
         }
 
         private static PersistableStatePoint CreateYieldStressStatePoint(MacroStabilityInwardsSoilLayer2D layer, IMacroStabilityInwardsPreconsolidationStress preconsolidationStress,
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.IO.Test/Factories/PersistableStateFactoryTest.cs
===================================================================
diff -u -r8e43aa4021689e559f7b3e8a9274f103c89844dc -r254879576a8e47483035335ff6deef1b28e1b832
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.IO.Test/Factories/PersistableStateFactoryTest.cs	(.../PersistableStateFactoryTest.cs)	(revision 8e43aa4021689e559f7b3e8a9274f103c89844dc)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.IO.Test/Factories/PersistableStateFactoryTest.cs	(.../PersistableStateFactoryTest.cs)	(revision 254879576a8e47483035335ff6deef1b28e1b832)
@@ -159,6 +159,37 @@
         }
 
         [Test]
+        public void Create_SoilProfileWithPreconsolidationStressOutsideLayers_ReturnsPersistableStates()
+        {
+            // Setup
+            MacroStabilityInwardsCalculationScenario calculation = MacroStabilityInwardsCalculationScenarioTestFactory.CreateMacroStabilityInwardsCalculationScenarioWithValidInput(new TestHydraulicBoundaryLocation());
+            MacroStabilityInwardsStochasticSoilProfile stochasticSoilProfile = MacroStabilityInwardsStochasticSoilProfileTestFactory.CreateMacroStabilityInwardsStochasticSoilProfile2D(new[]
+            {
+                MacroStabilityInwardsPreconsolidationStressTestFactory.CreateMacroStabilityInwardsPreconsolidationStress(new Point2D(50, 1))
+            });
+            calculation.InputParameters.StochasticSoilProfile = stochasticSoilProfile;
+
+            IMacroStabilityInwardsSoilProfileUnderSurfaceLine soilProfile = calculation.InputParameters.SoilProfileUnderSurfaceLine;
+
+            var idFactory = new IdFactory();
+            var registry = new MacroStabilityInwardsExportRegistry();
+
+            PersistableGeometryFactory.Create(soilProfile, idFactory, registry);
+
+            // Call
+            IEnumerable<PersistableState> states = PersistableStateFactory.Create(soilProfile, idFactory, registry);
+
+            // Assert
+            Assert.AreEqual(1, states.Count());
+
+            PersistableState state = states.First();
+
+            Assert.IsNotNull(state.Id);
+            CollectionAssert.IsEmpty(state.StateLines);
+            CollectionAssert.IsEmpty(state.StatePoints);
+        }
+
+        [Test]
         public void Create_WithValidData_ReturnsPersistableStates()
         {
             // Setup