diff --git a/konova/management/commands/kspMigrater/base_migrater.py b/konova/management/commands/kspMigrater/base_migrater.py
index 8a89ab1e..9e86cea6 100644
--- a/konova/management/commands/kspMigrater/base_migrater.py
+++ b/konova/management/commands/kspMigrater/base_migrater.py
@@ -145,7 +145,6 @@ class BaseMigrater:
             fetch_results = tmp_cursor.fetchall()
 
         migrated_identifier = "(migriert)"
-        instance.log.filter(comment__contains=migrated_identifier).delete()
         for result in fetch_results:
             comment = f"{result[0]} {migrated_identifier}"
             timestamp = make_aware(result[1])
@@ -169,15 +168,15 @@ class BaseMigrater:
                 action.save()
                 action.timestamp = timestamp
                 action.save()
-            instance.log.add(action)
+                instance.log.add(action)
 
         first_entry = instance.log.order_by("timestamp").first()
         last_entry = instance.log.order_by("-timestamp").first()
 
         if first_entry is not None and instance.created is None:
-            instance.created = UserActionLogEntry.get_created_action(first_entry.user)
-            instance.created.timestamp = first_entry.timestamp
-            instance.created.save()
+            first_entry.action = UserAction.CREATED
+            first_entry.save()
+            instance.created = first_entry
         if last_entry is not None and instance.modified != last_entry:
             instance.modified = last_entry
 
diff --git a/konova/management/commands/kspMigrater/compensation_migrater.py b/konova/management/commands/kspMigrater/compensation_migrater.py
index 0055ccc7..d219ffab 100644
--- a/konova/management/commands/kspMigrater/compensation_migrater.py
+++ b/konova/management/commands/kspMigrater/compensation_migrater.py
@@ -99,7 +99,7 @@ class CompensationMigrater(BaseMigrater):
         eivs = tmp_cursor.fetchall()
         len_eivs = len(eivs)
         if len_eivs != 1:
-            raise AssertionError(f"{kom_identifier} has {len_eivs} EIVs!")
+            raise ObjectDoesNotExist(f"{kom_identifier} has {len_eivs} EIVs!")
         eiv = eivs[0]
         try:
             intervention = Intervention.objects.get(
diff --git a/konova/management/commands/kspMigrater/user_migrater.py b/konova/management/commands/kspMigrater/user_migrater.py
index 408c5321..10365e78 100644
--- a/konova/management/commands/kspMigrater/user_migrater.py
+++ b/konova/management/commands/kspMigrater/user_migrater.py
@@ -39,9 +39,10 @@ class UserMigrater(BaseMigrater):
             user = User.objects.get_or_create(
                 username=result[0]
             )[0]
-            user.last_name = result[2]
+            user.last_name = result[1]
             user.first_name = result[2]
             user.email = result[3]
+            user.save()
 
             appusers = result[4].split(";;;")
             user_teams = []