diff --git a/src/authentic2_pratic/management/commands/load-pratic-ldif.py b/src/authentic2_pratic/management/commands/load-pratic-ldif.py
index 9295fff..2e45b3a 100644
--- a/src/authentic2_pratic/management/commands/load-pratic-ldif.py
+++ b/src/authentic2_pratic/management/commands/load-pratic-ldif.py
@@ -185,14 +185,20 @@ class PraticLDIFParser(ldif.LDIFParser):
                 'phone': 'telephoneNumber',
         }
         others = self.resolve_mapping(mapping, entry)
+        uid = others['uid']
         last_login_duration = int(entry.get('cdg59lastConnectionDuration', [0])[0])
         is_admin = entry.get('cdg59isAdmin', ['FALSE'])[0] == 'TRUE'
-        user = User(
-                collectivity=collectivity,
-                is_active=is_active,
-                last_login_duration=last_login_duration,
-                is_admin=is_admin,
-                **others)
+        try:
+            user = User.objects.get(uid=uid, collectivity=collectivity)
+            for k, v in others.iteritems():
+                setattr(user, k, v)
+        except User.DoesNotExist:
+            user = User(
+                    collectivity=collectivity,
+                    is_active=is_active,
+                    last_login_duration=last_login_duration,
+                    is_admin=is_admin,
+                    **others)
         if 'cdg59lastConnectionTime' in entry:
             last_login = datetime.fromtimestamp(int(entry['cdg59lastConnectionTime'][0]))
             last_login = make_aware(last_login, get_default_timezone())
@@ -202,7 +208,6 @@ class PraticLDIFParser(ldif.LDIFParser):
             user.password = password
         user.clean()
         self.users.append(user)
-        #accesses
         for siid in entry.get('cdg59serviceAccesses', []):
             def g(siid):
                 def f():