diff --git a/passerelle/contrib/rsa13/models.py b/passerelle/contrib/rsa13/models.py
index 08489f8c..b296a990 100644
--- a/passerelle/contrib/rsa13/models.py
+++ b/passerelle/contrib/rsa13/models.py
@@ -65,10 +65,17 @@ def dump_csv_columns(columns):
 
 class RSA13Form(GenericConnectorForm):
     def __init__(self, *args, **kwargs):
-        kwargs['initial'] = {}
-        for name in RSA13Resource.CSV_EXPORTS:
-            field = f'{name}_csv_columns'
-            kwargs['initial'][field] = dump_csv_columns(DEFAULTS[field])
+        instance = kwargs.get('instance')
+        if instance is None:
+            kwargs['initial'] = {}
+            for name in RSA13Resource.CSV_EXPORTS:
+                field = f'{name}_csv_columns'
+                kwargs['initial'][field] = dump_csv_columns(DEFAULTS[field])
+        else:
+            for name in RSA13Resource.CSV_EXPORTS:
+                field = f'{name}_csv_columns'
+                if not getattr(instance, field):
+                    setattr(instance, field, dump_csv_columns(DEFAULTS[field]))
         super().__init__(*args, **kwargs)
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
index e18c58f8..7a9291ee 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -200,12 +200,12 @@ def clear_cache():
 
 
 @pytest.fixture
-def simple_user():
+def simple_user(db):
     return User.objects.create_user('user', password='user')
 
 
 @pytest.fixture
-def admin_user():
+def admin_user(db):
     return User.objects.create_superuser('admin', email=None, password='admin')
 
 
diff --git a/tests/test_rsa13.py b/tests/test_rsa13.py
index 583be95c..f9bcf684 100644
--- a/tests/test_rsa13.py
+++ b/tests/test_rsa13.py
@@ -26,7 +26,9 @@ from django.db import connection
 from django.db.migrations.executor import MigrationExecutor
 
 import tests.utils
-from passerelle.contrib.rsa13.models import RSA13Resource
+from passerelle.contrib.rsa13.models import DEFAULTS, RSA13Resource, dump_csv_columns
+
+from .test_manager import login
 
 
 @pytest.fixture
@@ -1405,3 +1407,33 @@ def test_csv_columns_migration(transactional_db, settings):
     assert resource.beneficiaire_csv_columns == 'A 2\nB'
     assert resource.facturation_csv_columns == 'C\nD'
     assert resource.sorti_csv_columns == 'E\nF'
+
+
+def test_manager(app, admin_user):
+    app = login(app)
+    resp = app.get('/manage/')
+    resp = resp.click('Add Connector')
+    resp = resp.click('RSA CD13')
+    resp.forms[0]['title'] = 'Test Connector'
+    resp.forms[0]['slug'] = 'test-connector'
+    resp.forms[0]['description'] = 'Connector for a simple test'
+    resp.forms[0]['webservice_base_url'] = 'https://example.com/'
+    resp = resp.forms[0].submit().follow()
+    assert 'Test Connector' in resp.text
+
+    instance = RSA13Resource.objects.get()
+    for key, value in DEFAULTS.items():
+        assert getattr(instance, key) == dump_csv_columns(value)
+
+    resp = resp.click('Edit')
+    resp.form.set('beneficiaire_csv_columns', 'NUM_CAF')
+    resp.form.set('facturation_csv_columns', 'MATRICULE')
+    resp.form.set('sorti_csv_columns', 'NUM_CAF')
+    resp = resp.form.submit().follow()
+    instance = RSA13Resource.objects.get()
+    for key in DEFAULTS:
+        assert getattr(instance, key) in ['NUM_CAF', 'MATRICULE']
+
+    resp = resp.click('Edit')
+    for key in DEFAULTS:
+        assert resp.form[key].value in ['NUM_CAF', 'MATRICULE']