diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index eeb04908c7..0c327c738e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -15,6 +15,17 @@ Change Log
 
 Unreleased
 ----------
+[4.16.4]
+--------
+* revert: fix: set default langauge for all learners linked with an enteprise customer
+
+[4.16.3]
+--------
+* fix: fixing the removal logic for EnterpriseGroupMemberships, adding optional flag
+
+[4.16.2]
+---------
+* fix: fix the PATCH method of ``EnterpriseCourseEnrollmentView``.
 
 [4.16.1]
 ---------
@@ -40,7 +51,6 @@ Unreleased
 --------
 * fix: return a 404 response for inactive CSOD customers while fetching courses
 
-
 [4.15.8]
 --------
 * fix: SSO self-serve tool invalid entityId parsing
diff --git a/enterprise/__init__.py b/enterprise/__init__.py
index c8a6de1876..0ccfbd5bf6 100644
--- a/enterprise/__init__.py
+++ b/enterprise/__init__.py
@@ -2,4 +2,4 @@
 Your project description goes here.
 """
 
-__version__ = "4.16.1"
+__version__ = "4.16.4"
diff --git a/enterprise/api/v1/views/enterprise_group.py b/enterprise/api/v1/views/enterprise_group.py
index f15b48c229..cd25b3e83d 100644
--- a/enterprise/api/v1/views/enterprise_group.py
+++ b/enterprise/api/v1/views/enterprise_group.py
@@ -112,6 +112,7 @@ def get_learners(self, request, *args, **kwargs):
         are `memberDetails`, `memberStatus`, and `recentAction`. Ordering can be reversed by supplying a `-` at the
         beginning of the sorting value ie `-memberStatus`.
         - ``page`` (int, optional): Which page of paginated data to return.
+        - ``show_removed`` (bool, optional): Include removed learners in the response.
 
         Returns: Paginated list of learners that are associated with the enterprise group uuid::
 
@@ -137,6 +138,7 @@ def get_learners(self, request, *args, **kwargs):
         """
         query_params = self.request.query_params.copy()
         is_reversed = bool(query_params.get('is_reversed', False))
+        show_removed = bool(query_params.get('show_removed', False))
 
         param_serializers = serializers.EnterpriseGroupLearnersRequestQuerySerializer(
             data=query_params
@@ -155,7 +157,8 @@ def get_learners(self, request, *args, **kwargs):
             members = group_object.get_all_learners(user_query,
                                                     sort_by,
                                                     desc_order=is_reversed,
-                                                    pending_users_only=pending_users_only)
+                                                    pending_users_only=pending_users_only,
+                                                    fetch_removed=show_removed)
 
             page = self.paginate_queryset(members)
             serializer = serializers.EnterpriseGroupMembershipSerializer(page, many=True)
diff --git a/enterprise/models.py b/enterprise/models.py
index 3963d13115..fffff4a64b 100644
--- a/enterprise/models.py
+++ b/enterprise/models.py
@@ -4338,9 +4338,9 @@ def _get_explicit_group_members(self, user_query=None, fetch_removed=False, pend
         """
         Fetch explicitly defined members of a group, indicated by an existing membership record
         """
-        members = self.members.select_related(
-            'enterprise_customer_user', 'pending_enterprise_customer_user'
-        )
+        # note: self.members doesn't seem to surface soft deleted items
+        members = EnterpriseGroupMembership.all_objects.filter(
+            group__uuid=self.uuid).select_related('enterprise_customer_user', 'pending_enterprise_customer_user')
         if not fetch_removed:
             members = members.filter(is_removed=False)
         if user_query:
diff --git a/enterprise/signals.py b/enterprise/signals.py
index 438a8e74b2..24f19003c8 100644
--- a/enterprise/signals.py
+++ b/enterprise/signals.py
@@ -16,7 +16,7 @@
     NotConnectedToOpenEdX,
     get_default_catalog_content_filter,
     localized_utcnow,
-    set_enterprise_learner_language,
+    unset_enterprise_learner_language,
 )
 from integrated_channels.blackboard.models import BlackboardEnterpriseCustomerConfiguration
 from integrated_channels.canvas.models import CanvasEnterpriseCustomerConfiguration
@@ -104,15 +104,10 @@ def update_lang_pref_of_all_learners(sender, instance, **kwargs):  # pylint: dis
     if instance.default_language:
         prev_state = models.EnterpriseCustomer.objects.filter(uuid=instance.uuid).first()
         if prev_state and prev_state.default_language != instance.default_language:
-            default_language = instance.default_language
             # Unset the language preference of all the learners linked with the enterprise customer.
             # The middleware in the enterprise will handle the cases for setting a proper language for the learner.
-            logger.info(
-                '[SET_ENT_LANG] Task triggered to update user preference.. Enterprise: [%s], Language: [%s]',
-                instance.uuid,
-                default_language
-            )
-            update_enterprise_learners_user_preference.delay(instance.uuid, default_language)
+            logger.info('Task triggered to update user preference for learners. Enterprise: [%s]', instance.uuid)
+            update_enterprise_learners_user_preference.delay(instance.uuid)
 
 
 @receiver(pre_save, sender=models.EnterpriseCustomerBrandingConfiguration)
@@ -212,7 +207,7 @@ def update_learner_language_preference(sender, instance, created, **kwargs):
     # Unset the language preference when a new learner is linked with the enterprise customer.
     # The middleware in the enterprise will handle the cases for setting a proper language for the learner.
     if created and instance.enterprise_customer.default_language:
-        set_enterprise_learner_language(instance)
+        unset_enterprise_learner_language(instance)
 
 
 @receiver(post_save, sender=models.PendingEnterpriseCustomerAdminUser)
diff --git a/enterprise/tasks.py b/enterprise/tasks.py
index befe385e48..f6646ad1ec 100644
--- a/enterprise/tasks.py
+++ b/enterprise/tasks.py
@@ -19,7 +19,7 @@
 from enterprise.utils import (
     get_enterprise_customer,
     send_email_notification_message,
-    set_language_of_all_enterprise_learners,
+    unset_language_of_all_enterprise_learners,
 )
 
 LOGGER = getLogger(__name__)
@@ -342,12 +342,11 @@ def send_group_membership_removal_notification(enterprise_customer_uuid, members
 
 @shared_task
 @set_code_owner_attribute
-def update_enterprise_learners_user_preference(enterprise_customer_uuid, default_language):
+def update_enterprise_learners_user_preference(enterprise_customer_uuid):
     """
     Update the user preference `pref-lang` attribute for all enterprise learners linked with an enterprise.
 
     Arguments:
         * enterprise_customer_uuid (UUID): uuid of an enterprise customer
-        * default_language (str): new language code to set for all enterprise learners
     """
-    set_language_of_all_enterprise_learners(enterprise_customer_uuid, default_language)
+    unset_language_of_all_enterprise_learners(enterprise_customer_uuid)
diff --git a/enterprise/utils.py b/enterprise/utils.py
index 502c203767..dae60e6713 100644
--- a/enterprise/utils.py
+++ b/enterprise/utils.py
@@ -2219,43 +2219,34 @@ def get_platform_logo_url():
     return urljoin(settings.LMS_ROOT_URL, logo_url)
 
 
-def set_language_of_all_enterprise_learners(enterprise_customer_uuid, default_language):
+def unset_language_of_all_enterprise_learners(enterprise_customer_uuid):
     """
-    Set the language preference of all the learners belonging to the given enterprise customer.
+    Unset the language preference of all the learners belonging to the given enterprise customer.
 
     Arguments:
         enterprise_customer_uuid (UUI): uuid of an enterprise customer
-        default_language (str): default language to set for all learners
     """
     if UserPreference:
         enterprise_customer = get_enterprise_customer(enterprise_customer_uuid)
         user_ids = list(enterprise_customer.enterprise_customer_users.values_list('user_id', flat=True))
 
-        LOGGER.info(
-            '[SET_ENT_LANG] Update user preference started for learners. Enterprise: [%s], Language: [%s]',
-            enterprise_customer_uuid,
-            default_language
-        )
+        LOGGER.info('Update user preference started for learners. Enterprise: [%s]', enterprise_customer_uuid)
 
         for chunk in batch(user_ids, batch_size=10000):
             UserPreference.objects.filter(
                 key=LANGUAGE_KEY,
                 user_id__in=chunk
             ).update(
-                value=default_language
+                value=''
             )
-            LOGGER.info('[SET_ENT_LANG] Updated user preference for learners. Batch Size: [%s]', len(chunk))
+            LOGGER.info('Updated user preference for learners. Batch Size: [%s]', len(chunk))
 
-        LOGGER.info(
-            '[SET_ENT_LANG] Update user preference completed for learners. Enterprise: [%s], Language: [%s]',
-            enterprise_customer_uuid,
-            default_language
-        )
+        LOGGER.info('Update user preference completed for learners. Enterprise: [%s]', enterprise_customer_uuid)
 
 
-def set_enterprise_learner_language(enterprise_customer_user):
+def unset_enterprise_learner_language(enterprise_customer_user):
     """
-    Set the language preference of the given enterprise learners.
+    Unset the language preference of the given enterprise learners.
 
     Arguments:
         enterprise_customer_user (EnterpriseCustomerUser): Instance of the enterprise customer user.
@@ -2264,7 +2255,7 @@ def set_enterprise_learner_language(enterprise_customer_user):
         UserPreference.objects.update_or_create(
             key=LANGUAGE_KEY,
             user_id=enterprise_customer_user.user_id,
-            defaults={'value': enterprise_customer_user.enterprise_customer.default_language}
+            defaults={'value': ''}
         )
 
 
diff --git a/enterprise_learner_portal/api/v1/views.py b/enterprise_learner_portal/api/v1/views.py
index b962fa4733..78d9d5a578 100644
--- a/enterprise_learner_portal/api/v1/views.py
+++ b/enterprise_learner_portal/api/v1/views.py
@@ -96,6 +96,8 @@ def get(self, request):
                 user,
                 list(filtered_enterprise_enrollments)
             )
+        else:
+            course_enrollments_resume_urls = {}
 
         data = EnterpriseCourseEnrollmentSerializer(
             filtered_enterprise_enrollments,
@@ -103,9 +105,7 @@ def get(self, request):
             context={
                 'request': request,
                 'course_overviews': course_overviews,
-                'course_enrollments_resume_urls': (
-                    course_enrollments_resume_urls if course_enrollments_resume_urls else None
-                )
+                'course_enrollments_resume_urls': course_enrollments_resume_urls,
             },
         ).data
 
@@ -158,13 +158,22 @@ def patch(self, request):
 
         # TODO: For now, this makes the change backward compatible, we will change this to true boolean support
         enterprise_enrollment.saved_for_later = saved_for_later.lower() == 'true'
-
         enterprise_enrollment.save()
 
         course_overviews = get_course_overviews([course_id])
+
+        if get_resume_urls_for_course_enrollments and enterprise_enrollment.course_enrollment:
+            course_enrollments_resume_urls = get_resume_urls_for_course_enrollments(user, [enterprise_enrollment])
+        else:
+            course_enrollments_resume_urls = {}
+
         data = EnterpriseCourseEnrollmentSerializer(
             enterprise_enrollment,
-            context={'request': request, 'course_overviews': course_overviews},
+            context={
+                'request': request,
+                'course_overviews': course_overviews,
+                'course_enrollments_resume_urls': course_enrollments_resume_urls,
+            },
         ).data
 
         return Response(data)
diff --git a/pytest.local.ini b/pytest.local.ini
index b254bf0713..5bc8773e9f 100644
--- a/pytest.local.ini
+++ b/pytest.local.ini
@@ -4,4 +4,4 @@
 [pytest]
 DJANGO_SETTINGS_MODULE = enterprise.settings.test
 addopts = --cov-report term-missing -W ignore
-norecursedirs = .* docs requirements node_modules
+testpaths = tests
diff --git a/setup.cfg b/setup.cfg
index aab24d6646..f5452e73dd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -4,3 +4,6 @@
 # W503,W504: warnings added since pep8/pycodestyle 1.5.7 that we haven't cleaned up yet
 ignore=E501,W503,W504
 exclude=.git,.tox,enterprise/settings,enterprise/migrations,enterprise/static
+
+[flake8]
+max-line-length = 120
diff --git a/tests/test_enterprise/api/test_views.py b/tests/test_enterprise/api/test_views.py
index cce0931388..1e26ac2e14 100644
--- a/tests/test_enterprise/api/test_views.py
+++ b/tests/test_enterprise/api/test_views.py
@@ -7629,6 +7629,44 @@ def test_list_learners_filtered(self):
             'pending_learner_id'
         ) == pending_membership.pending_enterprise_customer_user.id
 
+    def test_list_removed_learners(self):
+        group = EnterpriseGroupFactory(
+            enterprise_customer=self.enterprise_customer,
+            applies_to_all_contexts=False,
+        )
+        memberships_to_delete = []
+        membership = EnterpriseGroupMembershipFactory(
+            group=group,
+            pending_enterprise_customer_user=None,
+            enterprise_customer_user__enterprise_customer=self.enterprise_customer,
+        )
+        memberships_to_delete.append(membership.enterprise_customer_user.user.email)
+
+        # first we remove the membership
+        remove_url = settings.TEST_SERVER + reverse(
+            'enterprise-group-remove-learners',
+            kwargs={'group_uuid': group.uuid},
+        )
+        request_data = {'learner_emails': memberships_to_delete}
+        response = self.client.post(remove_url, data=request_data)
+
+        # then we're checking if the filter works
+        removed_users_query_string = '?show_removed=true'
+        url = settings.TEST_SERVER + reverse(
+            'enterprise-group-learners',
+            kwargs={'group_uuid': group.uuid},
+        ) + removed_users_query_string
+        response = self.client.get(url)
+        assert response.json().get('count') == 1
+
+        # but we're doing an extra check to make sure its not fetched normally
+        url = settings.TEST_SERVER + reverse(
+            'enterprise-group-learners',
+            kwargs={'group_uuid': group.uuid},
+        )
+        response = self.client.get(url)
+        assert response.json().get('count') == 0
+
     def test_list_learners_sort_by(self):
         """
         Test that the list learners endpoint can be sorted by 'recentAction', 'status', 'memberDetails'
@@ -7978,7 +8016,7 @@ def test_successful_assign_learners_to_group(self, mock_send_group_membership_in
 
     def test_remove_learners_404(self):
         """
-        Test that the remove learners endpoint properly handles no finding the provided group
+        Test that the remove learners endpoint properly handles not finding the provided group
         """
         url = settings.TEST_SERVER + reverse(
             'enterprise-group-remove-learners',
diff --git a/tests/test_enterprise_learner_portal/api/test_views.py b/tests/test_enterprise_learner_portal/api/test_views.py
index f43a297fd5..731be00246 100644
--- a/tests/test_enterprise_learner_portal/api/test_views.py
+++ b/tests/test_enterprise_learner_portal/api/test_views.py
@@ -238,15 +238,45 @@ def test_view_requires_openedx_installation(self):
                 )
             )
 
-    @mock.patch('enterprise_learner_portal.api.v1.views.EnterpriseCourseEnrollmentSerializer')
+    @mock.patch('enterprise_learner_portal.api.v1.views.get_resume_urls_for_course_enrollments')
     @mock.patch('enterprise_learner_portal.api.v1.views.get_course_overviews')
-    def test_patch_success(self, mock_get_overviews, mock_serializer):
+    @mock.patch('enterprise_learner_portal.api.v1.serializers.get_course_run_status')
+    @mock.patch('enterprise_learner_portal.api.v1.serializers.get_emails_enabled')
+    @mock.patch('enterprise_learner_portal.api.v1.serializers.get_course_run_url')
+    @mock.patch('enterprise_learner_portal.api.v1.serializers.get_certificate_for_user')
+    def test_patch_success(
+        self,
+        mock_get_cert,
+        mock_get_course_run_url,
+        mock_get_emails_enabled,
+        mock_get_course_run_status,
+        mock_get_overviews,
+        mock_get_resume_urls,
+    ):
         """
         View should update the enrollment's saved_for_later field and return serialized data from
          EnterpriseCourseEnrollmentSerializer for the enrollment (which we mock in this case)
         """
-        mock_get_overviews.return_value = {'overview_info': 'this would be a larger dict'}
-        mock_serializer.return_value = self.MockSerializer()
+        mock_get_overviews.return_value = [{
+            'id': self.course_run_id,
+            'start': 'a datetime object',
+            'end': 'a datetime object',
+            'display_name_with_default': 'a default name',
+            'pacing': 'instructor',
+            'display_org_with_default': 'my university',
+        }]
+        mock_get_resume_urls.return_value = {
+            self.course_run_id: '/courses/course-v1:MITx+6.86x+2T2024'
+        }
+        mock_get_cert.return_value = {
+            'download_url': 'example.com',
+            'is_passing': True,
+            'created': 'a datetime object',
+        }
+        mock_get_course_run_url.return_value = 'course-run-url'
+        mock_get_emails_enabled.return_value = True
+        mock_get_course_run_status.return_value = 'completed'
+
         query_params = {
             'enterprise_id': str(self.enterprise_customer.uuid),
             'course_id': self.course_run_id,
@@ -255,18 +285,25 @@ def test_patch_success(self, mock_get_overviews, mock_serializer):
 
         assert not self.enterprise_enrollment.saved_for_later
 
-        resp = self.client.patch(
-            '{host}{path}?{query_params}'.format(
-                host=settings.TEST_SERVER,
-                path=reverse('enterprise-learner-portal-course-enrollment-list'),
-                query_params=urlencode(query_params),
+        with mock.patch(
+            'enterprise.models.EnterpriseCourseEnrollment.course_enrollment',
+            new_callable=mock.PropertyMock,
+        ) as mock_course_enrollment:
+            mock_course_enrollment.return_value = mock.Mock(
+                is_active=True,
+                mode='verified',
+            )
+            resp = self.client.patch(
+                '{host}{path}?{query_params}'.format(
+                    host=settings.TEST_SERVER,
+                    path=reverse('enterprise-learner-portal-course-enrollment-list'),
+                    query_params=urlencode(query_params),
+                )
             )
-        )
         assert resp.status_code == 200
-        assert resp.json() == [
-            SERIALIZED_MOCK_ACTIVE_ENROLLMENT,
-            SERIALIZED_MOCK_INACTIVE_ENROLLMENT,
-        ]
+        updated_record = resp.json()
+        assert updated_record['course_run_id'] == self.course_run_id
+        assert '/courses/course-v1:MITx+6.86x+2T2024' in updated_record['resume_course_run_url']
 
         self.enterprise_enrollment.refresh_from_db()
         assert self.enterprise_enrollment.saved_for_later
diff --git a/tests/test_models.py b/tests/test_models.py
index f0e8f15db7..558652b289 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -332,9 +332,9 @@ def test_catalog_contains_course_with_enterprise_customer_catalog(self, api_clie
         wraps=update_enterprise_learners_user_preference
     )
     @mock.patch('enterprise.utils.UserPreference', return_value=mock.MagicMock())
-    def test_set_language_of_all_enterprise_learners(self, user_preference_mock, mock_task):
+    def test_unset_language_of_all_enterprise_learners(self, user_preference_mock, mock_task):
         """
-        Validate that set_language_of_all_enterprise_learners is called whenever default_language changes.
+        Validate that unset_language_of_all_enterprise_learners is called whenever default_language changes.
         """
         user = factories.UserFactory(email='user123@example.com')
         enterprise_customer = factories.EnterpriseCustomerFactory()
@@ -345,24 +345,22 @@ def test_set_language_of_all_enterprise_learners(self, user_preference_mock, moc
         enterprise_customer.default_language = 'es-419'
         enterprise_customer.save()
         mock_task.assert_called_once()
-        user_preference_mock.objects.filter.return_value.update.assert_called_with(value='es-419')
         user_preference_mock.objects.filter.assert_called_once()
 
-        # Make sure `set_language_of_all_enterprise_learners` is called each time `default_language` changes.
+        # Make sure `unset_language_of_all_enterprise_learners` is called each time `default_language` changes.
         enterprise_customer.default_language = 'es-417'
         enterprise_customer.save()
         assert mock_task.call_count == 2
-        user_preference_mock.objects.filter.return_value.update.assert_called_with(value='es-417')
         assert user_preference_mock.objects.filter.call_count == 2
 
-        # make sure `set_language_of_all_enterprise_learners` is not called if `default_language` is
+        # make sure `unset_language_of_all_enterprise_learners` is not called if `default_language` is
         # not changed.
         enterprise_customer.default_language = 'es-417'
         enterprise_customer.save()
         assert mock_task.call_count == 2
         assert user_preference_mock.objects.filter.call_count == 2
 
-        # Make sure `set_language_of_all_enterprise_learners` is not called if `default_language` is
+        # Make sure `unset_language_of_all_enterprise_learners` is not called if `default_language` is
         # set to `None`.
         enterprise_customer.default_language = None
         enterprise_customer.save()
@@ -1008,20 +1006,15 @@ def test_soft_delete(self, method_name):
                     )
 
     @mock.patch('enterprise.utils.UserPreference', return_value=mock.MagicMock())
-    def test_set_enterprise_learner_language(self, user_preference_mock):
+    def test_unset_enterprise_learner_language(self, user_preference_mock):
         """
-        Validate that set_enterprise_learner_language is called whenever a nwe learner is linked to an enterprise
+        Validate that unset_enterprise_learner_language is called whenever a nwe learner is linked to an enterprise
         customer with Non-Null default language.
         """
         enterprise_customer_user = factories.EnterpriseCustomerUserFactory()
         user_preference_mock.objects.update_or_create.assert_called_once()
-        user_preference_mock.objects.update_or_create.assert_called_with(
-            key='pref-lang',
-            user_id=enterprise_customer_user.user_id,
-            defaults={'value': 'en'}
-        )
 
-        # Make sure `set_enterprise_learner_language` is not called if the enterprise customer does not have a
+        # Make sure `unset_enterprise_learner_language` is not called if the enterprise customer does not have a
         # default_language.
         enterprise_customer_user.enterprise_customer.default_language = None
         enterprise_customer_user.enterprise_customer.save()