diff --git a/README.md b/README.md
index a3e7f9c0d5..c1ebb0993b 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,6 @@ Please checkout [cura-build](https://github.com/Ultimaker/cura-build)
 
 Third party plugins
 -------------
-* [Print Cost Calculator](https://github.com/nallath/PrintCostCalculator): Calculates weight and monetary cost of your print.
 * [Post Processing Plugin](https://github.com/nallath/PostProcessingPlugin): Allows for post-processing scripts to run on g-code.
 * [Barbarian Plugin](https://github.com/nallath/BarbarianPlugin): Simple scale tool for imperial to metric.
 * [X3G Writer](https://github.com/Ghostkeeper/X3GWriter): Adds support for exporting X3G files.
diff --git a/cura/Settings/ContainerManager.py b/cura/Settings/ContainerManager.py
index 9a2282c8c0..0d776aec20 100644
--- a/cura/Settings/ContainerManager.py
+++ b/cura/Settings/ContainerManager.py
@@ -218,20 +218,25 @@ class ContainerManager(QObject):
         entries = entry_name.split("/")
         entry_name = entries.pop()
 
+        sub_item_changed = False
         if entries:
             root_name = entries.pop(0)
             root = container.getMetaDataEntry(root_name)
 
             item = root
-            for entry in entries:
+            for _ in range(len(entries)):
                 item = item.get(entries.pop(0), { })
 
+            if item[entry_name] != entry_value:
+                sub_item_changed = True
             item[entry_name] = entry_value
 
             entry_name = root_name
             entry_value = root
 
         container.setMetaDataEntry(entry_name, entry_value)
+        if sub_item_changed: #If it was only a sub-item that has changed then the setMetaDataEntry won't correctly notice that something changed, and we must manually signal that the metadata changed.
+            container.metaDataChanged.emit(container)
 
         return True
 
diff --git a/cura/Settings/MaterialManager.py b/cura/Settings/MaterialManager.py
index abfafc5f9f..8bb7b525f8 100644
--- a/cura/Settings/MaterialManager.py
+++ b/cura/Settings/MaterialManager.py
@@ -49,6 +49,8 @@ class MaterialManager(QObject):
         if button == "Undo":
             container_manager = ContainerManager.getInstance()
             container_manager.setContainerMetaDataEntry(self._material_diameter_warning_message.material_id, "properties/diameter", self._material_diameter_warning_message.previous_diameter)
+            approximate_previous_diameter = str(round(float(self._material_diameter_warning_message.previous_diameter)))
+            container_manager.setContainerMetaDataEntry(self._material_diameter_warning_message.material_id, "approximate_diameter", approximate_previous_diameter)
             message.hide()
         else:
             Logger.log("w", "Unknown button action for material diameter warning message: {action}".format(action = button))
\ No newline at end of file
diff --git a/plugins/CuraEngineBackend/StartSliceJob.py b/plugins/CuraEngineBackend/StartSliceJob.py
index c83ffb655d..f2e9cb7db2 100644
--- a/plugins/CuraEngineBackend/StartSliceJob.py
+++ b/plugins/CuraEngineBackend/StartSliceJob.py
@@ -44,6 +44,14 @@ class GcodeStartEndFormatter(Formatter):
 
 ##  Job class that builds up the message of scene data to send to CuraEngine.
 class StartSliceJob(Job):
+    ##  Meshes that are sent to the engine regardless of being outside of the
+    #   build volume.
+    #
+    #   If these settings are True for any mesh, the build volume is ignored.
+    #   Note that Support Mesh is not in here because it actually generates
+    #   g-code in the volume of the mesh.
+    _not_printed_mesh_settings = {"anti_overhang_mesh", "infill_mesh", "cutting_mesh"}
+
     def __init__(self, slice_message):
         super().__init__()
 
@@ -132,7 +140,8 @@ class StartSliceJob(Job):
                 temp_list = []
                 for node in DepthFirstIterator(self._scene.getRoot()):
                     if type(node) is SceneNode and node.getMeshData() and node.getMeshData().getVertices() is not None:
-                        if not getattr(node, "_outside_buildarea", False):
+                        if not getattr(node, "_outside_buildarea", False)\
+                                or (node.callDecoration("getStack") and any(node.callDecoration("getStack").getProperty(setting, "value") for setting in self._not_printed_mesh_settings)):
                             temp_list.append(node)
                     Job.yieldThread()
 
diff --git a/resources/qml/Preferences/MaterialView.qml b/resources/qml/Preferences/MaterialView.qml
index 39f2db0695..39692a9f84 100644
--- a/resources/qml/Preferences/MaterialView.qml
+++ b/resources/qml/Preferences/MaterialView.qml
@@ -169,9 +169,11 @@ TabView
                         // This does not use a SettingPropertyProvider, because we need to make the change to all containers
                         // which derive from the same base_file
                         var old_diameter = Cura.ContainerManager.getContainerProperty(base.containerId, "material_diameter", "value").toString();
-                        base.setMetaDataEntry("approximate_diameter", properties.approximate_diameter, Math.round(value).toString());
+                        var old_approximate_diameter = Cura.ContainerManager.getContainerMetaDataEntry(base.containerId, "approximate_diameter");
+                        base.setMetaDataEntry("approximate_diameter", old_approximate_diameter, Math.round(value).toString());
                         base.setMetaDataEntry("properties/diameter", properties.diameter, value);
-                        if (Cura.MachineManager.filterMaterialsByMachine && properties.approximate_diameter != Cura.MachineManager.activeMachine.approximateMaterialDiameter)
+                        var new_approximate_diameter = Cura.ContainerManager.getContainerMetaDataEntry(base.containerId, "approximate_diameter");
+                        if (Cura.MachineManager.filterMaterialsByMachine && new_approximate_diameter != Cura.MachineManager.activeMachine.approximateMaterialDiameter)
                         {
                             Cura.MaterialManager.showMaterialWarningMessage(base.containerId, old_diameter);
                         }
diff --git a/tests/Settings/TestGlobalStack.py b/tests/Settings/TestGlobalStack.py
index 3cac17fa3a..c6491d574c 100755
--- a/tests/Settings/TestGlobalStack.py
+++ b/tests/Settings/TestGlobalStack.py
@@ -12,6 +12,7 @@ from UM.Settings.InstanceContainer import InstanceContainer #To test against the
 from UM.Settings.SettingInstance import InstanceState
 import UM.Settings.ContainerRegistry
 import UM.Settings.ContainerStack
+import UM.Settings.SettingDefinition #To add settings to the definition.
 
 ##  Fake container registry that always provides all containers you ask of.
 @pytest.yield_fixture()
@@ -96,11 +97,14 @@ def test_addExtruder(global_stack):
     #Exceptional cases.
     (0, 0),
     (-10.1, -10),
-    (-1, -1)
+    (-1, -1),
+    (9000.1, 9000)
 ])
 def test_approximateMaterialDiameter(diameter, approximate_diameter, global_stack):
     global_stack.definition = DefinitionContainer(container_id = "TestDefinition")
-    global_stack.definition._metadata["material_diameter"] = str(diameter)
+    material_diameter = UM.Settings.SettingDefinition.SettingDefinition(key = "material_diameter", container = global_stack.definition)
+    material_diameter.addSupportedProperty("value", UM.Settings.SettingDefinition.DefinitionPropertyType.Any, default = diameter)
+    global_stack.definition.definitions.append(material_diameter)
     assert float(global_stack.approximateMaterialDiameter) == approximate_diameter
 
 ##  Tests getting the material diameter when there is no material diameter.