diff --git a/client/src/stores/courseSessions.ts b/client/src/stores/courseSessions.ts
index 19019699..138a7b95 100644
--- a/client/src/stores/courseSessions.ts
+++ b/client/src/stores/courseSessions.ts
@@ -44,6 +44,7 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
             dueDate.start = dayjs(dueDate.start);
             dueDate.end = dayjs(dueDate.end);
           });
+          sortDueDates(cs.due_dates);
         })
       );
 
@@ -202,7 +203,12 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
       allDueDatesReturn.push(...cs.due_dates);
     });
 
-    allDueDatesReturn.sort((a, b) => {
+    sortDueDates(allDueDatesReturn);
+    return allDueDatesReturn;
+  }
+
+  function sortDueDates(dueDates: DueDate[]) {
+    dueDates.sort((a, b) => {
       const dateA = dayjs(a.end);
       const dateB = dayjs(b.end);
 
@@ -212,8 +218,6 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
 
       return dateA.diff(dateB); // Otherwise, sort by the end date
     });
-
-    return allDueDatesReturn;
   }
 
   async function startUpload() {
diff --git a/server/vbv_lernwelt/assignment/migrations/0001_initial.py b/server/vbv_lernwelt/assignment/migrations/0001_initial.py
index 426909d4..26a2ed66 100644
--- a/server/vbv_lernwelt/assignment/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/assignment/migrations/0001_initial.py
@@ -9,7 +9,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/assignment/migrations/0002_assignmentcompletionauditlog_assignment_user.py b/server/vbv_lernwelt/assignment/migrations/0002_assignmentcompletionauditlog_assignment_user.py
index 261ddcf8..d8e227ab 100644
--- a/server/vbv_lernwelt/assignment/migrations/0002_assignmentcompletionauditlog_assignment_user.py
+++ b/server/vbv_lernwelt/assignment/migrations/0002_assignmentcompletionauditlog_assignment_user.py
@@ -6,7 +6,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/assignment/migrations/0003_initial.py b/server/vbv_lernwelt/assignment/migrations/0003_initial.py
index 553a518a..19877e6c 100644
--- a/server/vbv_lernwelt/assignment/migrations/0003_initial.py
+++ b/server/vbv_lernwelt/assignment/migrations/0003_initial.py
@@ -6,7 +6,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/assignment/migrations/0004_alter_assignmentcompletion_additional_json_data.py b/server/vbv_lernwelt/assignment/migrations/0004_alter_assignmentcompletion_additional_json_data.py
index ac2436f6..d81074b9 100644
--- a/server/vbv_lernwelt/assignment/migrations/0004_alter_assignmentcompletion_additional_json_data.py
+++ b/server/vbv_lernwelt/assignment/migrations/0004_alter_assignmentcompletion_additional_json_data.py
@@ -4,7 +4,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("assignment", "0003_initial"),
     ]
diff --git a/server/vbv_lernwelt/assignment/migrations/0005_alter_assignment_assignment_type.py b/server/vbv_lernwelt/assignment/migrations/0005_alter_assignment_assignment_type.py
index 45cd2e6a..c9bd2a08 100644
--- a/server/vbv_lernwelt/assignment/migrations/0005_alter_assignment_assignment_type.py
+++ b/server/vbv_lernwelt/assignment/migrations/0005_alter_assignment_assignment_type.py
@@ -4,7 +4,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("assignment", "0004_alter_assignmentcompletion_additional_json_data"),
     ]
diff --git a/server/vbv_lernwelt/competence/migrations/0001_initial.py b/server/vbv_lernwelt/competence/migrations/0001_initial.py
index a857392c..120e8741 100644
--- a/server/vbv_lernwelt/competence/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/competence/migrations/0001_initial.py
@@ -7,7 +7,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/competence/migrations/0002_performancecriteria_learning_unit.py b/server/vbv_lernwelt/competence/migrations/0002_performancecriteria_learning_unit.py
index 890ac6c1..125f8adc 100644
--- a/server/vbv_lernwelt/competence/migrations/0002_performancecriteria_learning_unit.py
+++ b/server/vbv_lernwelt/competence/migrations/0002_performancecriteria_learning_unit.py
@@ -5,7 +5,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/contrib/sites/migrations/0001_initial.py b/server/vbv_lernwelt/contrib/sites/migrations/0001_initial.py
index 297ae556..7cfa9b89 100644
--- a/server/vbv_lernwelt/contrib/sites/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/contrib/sites/migrations/0001_initial.py
@@ -5,7 +5,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = []
diff --git a/server/vbv_lernwelt/core/migrations/0001_initial.py b/server/vbv_lernwelt/core/migrations/0001_initial.py
index e196649b..81165d64 100644
--- a/server/vbv_lernwelt/core/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/core/migrations/0001_initial.py
@@ -9,7 +9,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/course/migrations/0001_initial.py b/server/vbv_lernwelt/course/migrations/0001_initial.py
index 730fc62f..dc339bd0 100644
--- a/server/vbv_lernwelt/course/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/course/migrations/0001_initial.py
@@ -9,7 +9,6 @@ import vbv_lernwelt.course.models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/course/migrations/0002_initial.py b/server/vbv_lernwelt/course/migrations/0002_initial.py
index 25a52a56..2bd9fdb4 100644
--- a/server/vbv_lernwelt/course/migrations/0002_initial.py
+++ b/server/vbv_lernwelt/course/migrations/0002_initial.py
@@ -6,7 +6,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/course/migrations/0003_alter_coursecompletion_additional_json_data.py b/server/vbv_lernwelt/course/migrations/0003_alter_coursecompletion_additional_json_data.py
index d90a3f15..6fc15629 100644
--- a/server/vbv_lernwelt/course/migrations/0003_alter_coursecompletion_additional_json_data.py
+++ b/server/vbv_lernwelt/course/migrations/0003_alter_coursecompletion_additional_json_data.py
@@ -4,7 +4,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("course", "0002_initial"),
     ]
diff --git a/server/vbv_lernwelt/course_session/migrations/0001_initial.py b/server/vbv_lernwelt/course_session/migrations/0001_initial.py
index a669d2d2..dc9cca8d 100644
--- a/server/vbv_lernwelt/course_session/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/course_session/migrations/0001_initial.py
@@ -6,7 +6,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_due_date.py b/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_due_date.py
index dfc7cb7d..f4166c6b 100644
--- a/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_due_date.py
+++ b/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_due_date.py
@@ -5,7 +5,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/course_session/migrations/0003_initial.py b/server/vbv_lernwelt/course_session/migrations/0003_initial.py
index 73c4e1ef..68fcb7bf 100644
--- a/server/vbv_lernwelt/course_session/migrations/0003_initial.py
+++ b/server/vbv_lernwelt/course_session/migrations/0003_initial.py
@@ -5,7 +5,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/duedate/migrations/0001_initial.py b/server/vbv_lernwelt/duedate/migrations/0001_initial.py
index 0d84b5f4..c59e833f 100644
--- a/server/vbv_lernwelt/duedate/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/duedate/migrations/0001_initial.py
@@ -5,7 +5,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/edoniq_test/tests/test_edoniq_export.py b/server/vbv_lernwelt/edoniq_test/tests/test_edoniq_export.py
index 893ca698..e3ad08ff 100644
--- a/server/vbv_lernwelt/edoniq_test/tests/test_edoniq_export.py
+++ b/server/vbv_lernwelt/edoniq_test/tests/test_edoniq_export.py
@@ -35,12 +35,12 @@ class EdoniqUserExportTestCase(TestCase):
         user2.save()
 
     def test_fetch_course_session_users(self):
-        users = fetch_course_session_users([COURSE_TEST_ID])
+        users = fetch_course_session_users([COURSE_TEST_ID], excluded_domains=[])
         self.assertEqual(len(users), 2)
 
     def test_fetch_course_session_trainers(self):
         users = fetch_course_session_users(
-            [COURSE_TEST_ID], role=CourseSessionUser.Role.EXPERT
+            [COURSE_TEST_ID], role=CourseSessionUser.Role.EXPERT, excluded_domains=[]
         )
         self.assertEqual(len(users), 1)
 
@@ -48,11 +48,13 @@ class EdoniqUserExportTestCase(TestCase):
         user1 = User.objects.get(email="test-student1@example.com")
         user1.email = "some@eiger-versicherungen.ch"
         user1.save()
-        users = fetch_course_session_users([COURSE_TEST_ID])
+        users = fetch_course_session_users(
+            [COURSE_TEST_ID], excluded_domains=["eiger-versicherungen.ch"]
+        )
         self.assertEqual(len(users), 1)
 
     def test_export_students_and_trainers(self):
-        users = fetch_course_session_all_users([COURSE_TEST_ID])
+        users = fetch_course_session_all_users([COURSE_TEST_ID], excluded_domains=[])
         self.assertEqual(len(users), 3)
 
     def test_deduplicates_users(self):
@@ -64,13 +66,11 @@ class EdoniqUserExportTestCase(TestCase):
             course_session=cs_zrh,
             user=trainer1,
         )
-        users = fetch_course_session_all_users([COURSE_TEST_ID])
-        for u in users:
-            print(u.edoniq_role, u.email)
+        users = fetch_course_session_all_users([COURSE_TEST_ID], excluded_domains=[])
         self.assertEqual(len(users), 3)
 
     def test_response_csv(self):
-        users = fetch_course_session_users([COURSE_TEST_ID])
+        users = fetch_course_session_users([COURSE_TEST_ID], excluded_domains=[])
         response = generate_export_response(users)
 
         user_data = [
diff --git a/server/vbv_lernwelt/edoniq_test/views.py b/server/vbv_lernwelt/edoniq_test/views.py
index 30f65398..3cae228d 100644
--- a/server/vbv_lernwelt/edoniq_test/views.py
+++ b/server/vbv_lernwelt/edoniq_test/views.py
@@ -4,7 +4,7 @@ from itertools import chain
 from typing import List
 
 from django.contrib.admin.views.decorators import staff_member_required
-from django.db.models import CharField, Value
+from django.db.models import CharField, Q, Value
 from django.http import HttpResponse
 
 from vbv_lernwelt.core.models import User
@@ -12,6 +12,7 @@ from vbv_lernwelt.course.consts import COURSE_UK, COURSE_UK_FR, COURSE_UK_IT
 from vbv_lernwelt.course.models import CourseSessionUser
 
 UK_COURSE_IDS = [COURSE_UK, COURSE_UK_FR, COURSE_UK_IT]
+DEFAULT_EXCLUDED_DOMAINS = ["eiger-versicherung.ch", "assurance.ch", "example.com"]
 
 
 @staff_member_required
@@ -34,30 +35,41 @@ def export_students_and_trainers(request):
     return generate_export_response(course_session_users)
 
 
-def fetch_course_session_users(courses: List[int], role=CourseSessionUser.Role.MEMBER):
+def fetch_course_session_users(
+    courses: List[int], role=CourseSessionUser.Role.MEMBER, excluded_domains=None
+):
     if role == CourseSessionUser.Role.EXPERT:
         edoniq_role = "Trainer"
     else:
         edoniq_role = "Lernende"
 
+    # exclude test users if required
+    if excluded_domains is None:
+        excluded_domains = DEFAULT_EXCLUDED_DOMAINS
+
+    exclude_q = Q()
+    for condition in excluded_domains:
+        exclude_q |= Q(email__contains=condition)
+
     # if users should be exported per course session, remove the distinct() call
     return (
         User.objects.filter(
             coursesessionuser__course_session__course__id__in=courses,
             coursesessionuser__role=role,
         )
-        .exclude(email__contains="eiger-versicherungen.ch")  # exclude test users
-        .exclude(email__contains="assurance.ch")
+        .exclude(exclude_q)
         .order_by("email")
         .annotate(edoniq_role=Value(edoniq_role, output_field=CharField()))
         .distinct()
     )
 
 
-def fetch_course_session_all_users(courses: List[int]):
-    course_session_users = fetch_course_session_users(courses)
+def fetch_course_session_all_users(courses: List[int], excluded_domains=None):
+    course_session_users = fetch_course_session_users(
+        courses, excluded_domains=excluded_domains
+    )
     course_session_trainers = fetch_course_session_users(
-        courses, role=CourseSessionUser.Role.EXPERT
+        courses, role=CourseSessionUser.Role.EXPERT, excluded_domains=excluded_domains
     )
     combined_queryset = chain(course_session_users, course_session_trainers)
 
diff --git a/server/vbv_lernwelt/feedback/migrations/0001_initial.py b/server/vbv_lernwelt/feedback/migrations/0001_initial.py
index c871fc75..d0a63cb2 100644
--- a/server/vbv_lernwelt/feedback/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/feedback/migrations/0001_initial.py
@@ -6,7 +6,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = []
diff --git a/server/vbv_lernwelt/feedback/migrations/0002_initial.py b/server/vbv_lernwelt/feedback/migrations/0002_initial.py
index d0543c85..651b2e27 100644
--- a/server/vbv_lernwelt/feedback/migrations/0002_initial.py
+++ b/server/vbv_lernwelt/feedback/migrations/0002_initial.py
@@ -5,7 +5,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/files/migrations/0001_initial.py b/server/vbv_lernwelt/files/migrations/0001_initial.py
index 36cbad5e..117404b6 100644
--- a/server/vbv_lernwelt/files/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/files/migrations/0001_initial.py
@@ -10,7 +10,6 @@ import vbv_lernwelt.files.utils
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/importer/services.py b/server/vbv_lernwelt/importer/services.py
index 2cd64419..7e9aa252 100644
--- a/server/vbv_lernwelt/importer/services.py
+++ b/server/vbv_lernwelt/importer/services.py
@@ -508,7 +508,6 @@ def import_students_from_excel(filename: str):
                 "Sprache",
                 "Durchführungen",
                 "Lehrvertragsnummer",
-                "Geburtsdatum",
             ],
         )
         create_or_update_student(data)
diff --git a/server/vbv_lernwelt/importer/tests/Schulungen_Teilnehmende.xlsx b/server/vbv_lernwelt/importer/tests/Schulungen_Teilnehmende.xlsx
index b79f00e0..d1277189 100644
Binary files a/server/vbv_lernwelt/importer/tests/Schulungen_Teilnehmende.xlsx and b/server/vbv_lernwelt/importer/tests/Schulungen_Teilnehmende.xlsx differ
diff --git a/server/vbv_lernwelt/learnpath/migrations/0001_initial.py b/server/vbv_lernwelt/learnpath/migrations/0001_initial.py
index 596b11ad..58dc9315 100644
--- a/server/vbv_lernwelt/learnpath/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/learnpath/migrations/0001_initial.py
@@ -7,7 +7,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/learnpath/migrations/0002_alter_learningcontentassignment_assignment_type.py b/server/vbv_lernwelt/learnpath/migrations/0002_alter_learningcontentassignment_assignment_type.py
index fcdbbdbe..e76592f7 100644
--- a/server/vbv_lernwelt/learnpath/migrations/0002_alter_learningcontentassignment_assignment_type.py
+++ b/server/vbv_lernwelt/learnpath/migrations/0002_alter_learningcontentassignment_assignment_type.py
@@ -4,7 +4,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("learnpath", "0001_initial"),
     ]
diff --git a/server/vbv_lernwelt/media_library/migrations/0001_initial.py b/server/vbv_lernwelt/media_library/migrations/0001_initial.py
index 004d5f13..c36493ef 100644
--- a/server/vbv_lernwelt/media_library/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/media_library/migrations/0001_initial.py
@@ -10,7 +10,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
diff --git a/server/vbv_lernwelt/notify/migrations/0001_initial.py b/server/vbv_lernwelt/notify/migrations/0001_initial.py
index cbca2aeb..2739e157 100644
--- a/server/vbv_lernwelt/notify/migrations/0001_initial.py
+++ b/server/vbv_lernwelt/notify/migrations/0001_initial.py
@@ -8,7 +8,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [