diff --git a/tests/Settings/TestExtruderStack.py b/tests/Settings/TestExtruderStack.py
index 95f6a7a310..f41a6da0e2 100644
--- a/tests/Settings/TestExtruderStack.py
+++ b/tests/Settings/TestExtruderStack.py
@@ -253,126 +253,6 @@ def test_deserializeMoveDefinitionContainer(extruder_stack):
 
     UM.Settings.ContainerStack._containerRegistry = None
 
-##  Tests whether materials are being read properly from an extruder stack.
-@pytest.mark.parametrize("filename,                     material_id", [
-                        ("Left.extruder.cfg",           "some_instance"),
-                        ("ExtruderLegacy.stack.cfg",    "some_instance"),
-                        ("OnlyMaterial.extruder.cfg",   "some_instance"),
-                        ("OnlyDefinition.extruder.cfg", "empty"),
-                        ("Complete.extruder.cfg",       "some_material")
-])
-def test_deserializeMaterial(filename, material_id, container_registry, extruder_stack):
-    serialized = readStack(filename)
-
-    #Mock the loading of the instance containers.
-    extruder_stack.findContainer = findSomeContainers
-    original_container_registry = UM.Settings.ContainerStack._containerRegistry
-    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all profiles you ask of.
-
-    extruder_stack.deserialize(serialized)
-    assert extruder_stack.material.getId() == material_id
-
-    #Restore.
-    UM.Settings.ContainerStack._containerRegistry = original_container_registry
-
-##  Tests that when an extruder is loaded with an unknown instance, it raises an
-#   exception.
-def test_deserializeMissingContainer(extruder_stack):
-    serialized = readStack("Left.extruder.cfg")
-    with pytest.raises(Exception):
-        extruder_stack.deserialize(serialized)
-    try:
-        extruder_stack.deserialize(serialized)
-    except Exception as e:
-        #Must be exactly Exception, not one of its subclasses, since that is what gets raised when a stack has an unknown container.
-        #That's why we can't use pytest.raises.
-        assert type(e) == Exception
-
-##  Tests whether qualities are being read properly from an extruder stack.
-@pytest.mark.parametrize("filename,                  quality_id", [
-                        ("Left.extruder.cfg",        "empty"),
-                        ("ExtruderLegacy.stack.cfg", "empty"),
-                        ("OnlyQuality.extruder.cfg", "some_instance"),
-                        ("Complete.extruder.cfg",    "some_quality")
-])
-def test_deserializeQuality(filename, quality_id, container_registry, extruder_stack):
-    serialized = readStack(filename)
-
-    #Mock the loading of the instance containers.
-    extruder_stack.findContainer = findSomeContainers
-    original_container_registry = UM.Settings.ContainerStack._containerRegistry
-    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all profiles you ask of.
-
-    extruder_stack.deserialize(serialized)
-    assert extruder_stack.quality.getId() == quality_id
-
-    #Restore.
-    UM.Settings.ContainerStack._containerRegistry = original_container_registry
-
-##  Tests whether quality changes are being read properly from an extruder
-#   stack.
-@pytest.mark.parametrize("filename,                         quality_changes_id", [
-                        ("Left.extruder.cfg",               "empty"),
-                        ("ExtruderLegacy.stack.cfg",        "empty"),
-                        ("OnlyQualityChanges.extruder.cfg", "some_instance"),
-                        ("Complete.extruder.cfg",           "some_quality_changes")
-])
-def test_deserializeQualityChanges(filename, quality_changes_id, container_registry, extruder_stack):
-    serialized = readStack(filename)
-
-    #Mock the loading of the instance containers.
-    extruder_stack.findContainer = findSomeContainers
-    original_container_registry = UM.Settings.ContainerStack._containerRegistry
-    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all profiles you ask of.
-
-    extruder_stack.deserialize(serialized)
-    assert extruder_stack.qualityChanges.getId() == quality_changes_id
-
-    #Restore.
-    UM.Settings.ContainerStack._containerRegistry = original_container_registry
-
-##  Tests whether user changes are being read properly from an extruder stack.
-@pytest.mark.parametrize("filename,                  user_changes_id", [
-                        ("Left.extruder.cfg",        "empty"),
-                        ("ExtruderLegacy.stack.cfg", "empty"),
-                        ("OnlyUser.extruder.cfg",    "some_instance"),
-                        ("Complete.extruder.cfg",    "some_user_changes")
-])
-def test_deserializeUserChanges(filename, user_changes_id, container_registry, extruder_stack):
-    serialized = readStack(filename)
-
-    #Mock the loading of the instance containers.
-    extruder_stack.findContainer = findSomeContainers
-    original_container_registry = UM.Settings.ContainerStack._containerRegistry
-    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all profiles you ask of.
-
-    extruder_stack.deserialize(serialized)
-    assert extruder_stack.userChanges.getId() == user_changes_id
-
-    #Restore.
-    UM.Settings.ContainerStack._containerRegistry = original_container_registry
-
-##  Tests whether variants are being read properly from an extruder stack.
-@pytest.mark.parametrize("filename,                  variant_id", [
-                        ("Left.extruder.cfg",        "empty"),
-                        ("ExtruderLegacy.stack.cfg", "empty"),
-                        ("OnlyVariant.extruder.cfg", "some_instance"),
-                        ("Complete.extruder.cfg",    "some_variant")
-])
-def test_deserializeVariant(filename, variant_id, container_registry, extruder_stack):
-    serialized = readStack(filename)
-
-    #Mock the loading of the instance containers.
-    extruder_stack.findContainer = findSomeContainers
-    original_container_registry = UM.Settings.ContainerStack._containerRegistry
-    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all profiles you ask of.
-
-    extruder_stack.deserialize(serialized)
-    assert extruder_stack.variant.getId() == variant_id
-
-    #Restore.
-    UM.Settings.ContainerStack._containerRegistry = original_container_registry
-
 ##  Tests whether getProperty properly applies the stack-like behaviour on its
 #   containers.
 def test_getPropertyFallThrough(extruder_stack):