diff --git a/mpwo_api/mpwo_api/activities/models.py b/mpwo_api/mpwo_api/activities/models.py
index 052cb06f..d7082ef2 100644
--- a/mpwo_api/mpwo_api/activities/models.py
+++ b/mpwo_api/mpwo_api/activities/models.py
@@ -3,7 +3,7 @@ import datetime
 from mpwo_api import db
 from sqlalchemy.dialects import postgresql
 from sqlalchemy.event import listens_for
-from sqlalchemy.ext.hybrid import Comparator, hybrid_property
+from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm.session import object_session
 from sqlalchemy.types import Enum
 
@@ -40,9 +40,9 @@ def update_records(activity, sport_id, connection, session):
     for record_type, record_data in new_records.items():
         if record_data['record_value']:
             record = Record.query.filter_by(
-                user_id=activity.user_id,
-                sport_id=activity.sport_id,
-                record_type=record_type,
+                        user_id=activity.user_id,
+                        sport_id=activity.sport_id,
+                        record_type=record_type,
             ).first()
             if record:
                 value = convert_value_to_integer(
@@ -61,6 +61,14 @@ def update_records(activity, sport_id, connection, session):
                 )
                 new_record.value = record_data['record_value']
                 session.add(new_record)
+        else:
+            connection.execute(record_table.delete().where(
+                record_table.c.user_id == activity.user_id,
+            ).where(
+                record_table.c.sport_id == sport_id,
+            ).where(
+                record_table.c.record_type == record_type,
+            ))
 
 
 class Sport(db.Model):
@@ -167,7 +175,8 @@ class Activity(db.Model):
             "ave_speed": float(self.ave_speed) if self.ave_speed else None,
             "with_gpx": self.gpx is not None,
             "bounds": [float(bound) for bound in self.bounds] if self.bounds else [],  # noqa
-            "segments": [segment.serialize() for segment in self.segments]
+            "segments": [segment.serialize() for segment in self.segments],
+            "records": [record.serialize() for record in self.records]
         }
 
     @classmethod
@@ -206,16 +215,15 @@ def on_activity_insert(mapper, connection, activity):
 @listens_for(Activity, 'after_update')
 def on_activity_update(mapper, connection, activity):
     if object_session(activity).is_modified(activity, include_collections=True):  # noqa
-        sports_list = []
-        records = Record.query.filter_by(
-            activity_id=activity.id,
-        ).all()
-        for rec in records:
-            if rec.sport_id not in sports_list:
-                sports_list.append(rec.sport_id)
-
         @listens_for(db.Session, 'after_flush', once=True)
         def receive_after_flush(session, context):
+            sports_list = [activity.sport_id]
+            records = Record.query.filter_by(
+                activity_id=activity.id,
+            ).all()
+            for rec in records:
+                if rec.sport_id not in sports_list:
+                    sports_list.append(rec.sport_id)
             for sport_id in sports_list:
                 update_records(activity, sport_id, connection, session)
 
@@ -265,13 +273,6 @@ class ActivitySegment(db.Model):
         }
 
 
-class ValueComparator(Comparator):
-    def operate(self, op, other):
-        if isinstance(other, datetime.timedelta):
-            other = convert_timedelta_to_integer(other)
-        return op(self.__clause_element__(), other)
-
-
 class Record(db.Model):
     __tablename__ = "records"
     __table_args__ = (db.UniqueConstraint(
@@ -314,7 +315,6 @@ class Record(db.Model):
     def value(self):
         if self._value is None:
             return None
-
         if self.record_type == 'LD':
             return datetime.timedelta(seconds=self._value)
         elif self.record_type in ['AS', 'MS']:
@@ -326,10 +326,6 @@ class Record(db.Model):
     def value(self, val):
         self._value = convert_value_to_integer(self.record_type, val)
 
-    @value.comparator
-    def value(cls):
-        return ValueComparator(cls._value)
-
     def serialize(self):
         if self.value is None:
             value = None
diff --git a/mpwo_api/mpwo_api/tests/test_activities_api_1_post.py b/mpwo_api/mpwo_api/tests/test_activities_api_1_post.py
index 9acd3ec8..b59f586a 100644
--- a/mpwo_api/mpwo_api/tests/test_activities_api_1_post.py
+++ b/mpwo_api/mpwo_api/tests/test_activities_api_1_post.py
@@ -34,6 +34,29 @@ def assert_activity_data_with_gpx(data):
     assert segment['moving'] == '0:04:10'
     assert segment['pauses'] is None
 
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 1
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[0]['value'] == 5.09
+    assert records[1]['sport_id'] == 1
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[1]['value'] == '0:04:10'
+    assert records[2]['sport_id'] == 1
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[2]['value'] == 0.32
+    assert records[3]['sport_id'] == 1
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[3]['value'] == 4.6
+
 
 def assert_activity_data_wo_gpx(data):
     assert 'creation_date' in data['data']['activities'][0]
@@ -53,6 +76,31 @@ def assert_activity_data_wo_gpx(data):
     assert data['data']['activities'][0]['pauses'] is None
     assert data['data']['activities'][0]['with_gpx'] is False
 
+    assert len(data['data']['activities'][0]['segments']) == 0
+
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 1
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[0]['value'] == 10.0
+    assert records[1]['sport_id'] == 1
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[1]['value'] == '1:00:00'
+    assert records[2]['sport_id'] == 1
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[2]['value'] == 10.0
+    assert records[3]['sport_id'] == 1
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[3]['value'] == 10.0
+
 
 def test_add_an_activity_gpx(app, user_1, sport_1_cycling, gpx_file):
     client = app.test_client()
diff --git a/mpwo_api/mpwo_api/tests/test_activities_api_2_patch.py b/mpwo_api/mpwo_api/tests/test_activities_api_2_patch.py
index b02d56ba..10039548 100644
--- a/mpwo_api/mpwo_api/tests/test_activities_api_2_patch.py
+++ b/mpwo_api/mpwo_api/tests/test_activities_api_2_patch.py
@@ -18,6 +18,29 @@ def assert_activity_data_with_gpx(data):
     assert data['data']['activities'][0]['pauses'] is None
     assert data['data']['activities'][0]['with_gpx'] is True
 
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 2
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[0]['value'] == 5.09
+    assert records[1]['sport_id'] == 2
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[1]['value'] == '0:04:10'
+    assert records[2]['sport_id'] == 2
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[2]['value'] == 0.32
+    assert records[3]['sport_id'] == 2
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Tue, 13 Mar 2018 12:44:45 GMT'
+    assert records[3]['value'] == 4.6
+
 
 def test_edit_an_activity_with_gpx(
     app, user_1, sport_1_cycling, sport_2_running, gpx_file
@@ -203,10 +226,8 @@ def test_edit_an_activity_with_gpx_incorrect_data(
 
 
 def test_edit_an_activity_wo_gpx(
-    app, user_1, sport_1_cycling, activity_cycling_user_1
+    app, user_1, sport_1_cycling, sport_2_running
 ):
-    activity_cycling_user_1.title = 'cycling - 2018-01-01 00:00:00'
-
     client = app.test_client()
     resp_login = client.post(
         '/api/auth/login',
@@ -216,14 +237,77 @@ def test_edit_an_activity_wo_gpx(
         )),
         content_type='application/json'
     )
-    response = client.patch(
-        '/api/activities/1',
+
+    response = client.post(
+        '/api/activities/no_gpx',
         content_type='application/json',
         data=json.dumps(dict(
             sport_id=1,
             duration=3600,
+            activity_date='2018-05-14 14:05',
+            distance=7,
+            title='Activity test'
+        )),
+        headers=dict(
+            Authorization='Bearer ' + json.loads(
+                resp_login.data.decode()
+            )['auth_token']
+        )
+    )
+
+    data = json.loads(response.data.decode())
+
+    assert response.status_code == 201
+    assert 'created' in data['status']
+    assert len(data['data']['activities']) == 1
+    assert 'creation_date' in data['data']['activities'][0]
+    assert data['data']['activities'][0]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'  # noqa
+    assert data['data']['activities'][0]['user_id'] == 1
+    assert data['data']['activities'][0]['sport_id'] == 1
+    assert data['data']['activities'][0]['duration'] == '1:00:00'
+    assert data['data']['activities'][0]['title'] == 'Activity test'  # noqa
+    assert data['data']['activities'][0]['ascent'] is None
+    assert data['data']['activities'][0]['ave_speed'] == 7.0
+    assert data['data']['activities'][0]['descent'] is None
+    assert data['data']['activities'][0]['distance'] == 7.0
+    assert data['data']['activities'][0]['max_alt'] is None
+    assert data['data']['activities'][0]['max_speed'] == 7.0
+    assert data['data']['activities'][0]['min_alt'] is None
+    assert data['data']['activities'][0]['moving'] == '1:00:00'
+    assert data['data']['activities'][0]['pauses'] is None
+    assert data['data']['activities'][0]['with_gpx'] is False
+
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 1
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[0]['value'] == 7.0
+    assert records[1]['sport_id'] == 1
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[1]['value'] == '1:00:00'
+    assert records[2]['sport_id'] == 1
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[2]['value'] == 7.0
+    assert records[3]['sport_id'] == 1
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[3]['value'] == 7.0
+
+    response = client.patch(
+        '/api/activities/1',
+        content_type='application/json',
+        data=json.dumps(dict(
+            sport_id=2,
+            duration=3600,
             activity_date='2018-05-15 14:05',
-            distance=10,
+            distance=8,
             title='Activity test'
         )),
         headers=dict(
@@ -240,26 +324,47 @@ def test_edit_an_activity_wo_gpx(
     assert 'creation_date' in data['data']['activities'][0]
     assert data['data']['activities'][0]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'  # noqa
     assert data['data']['activities'][0]['user_id'] == 1
-    assert data['data']['activities'][0]['sport_id'] == 1
+    assert data['data']['activities'][0]['sport_id'] == 2
     assert data['data']['activities'][0]['duration'] == '1:00:00'
-    assert data['data']['activities'][0]['title'] == 'Activity test'  # noqa
+    assert data['data']['activities'][0]['title'] == 'Activity test'
     assert data['data']['activities'][0]['ascent'] is None
-    assert data['data']['activities'][0]['ave_speed'] == 10.0
+    assert data['data']['activities'][0]['ave_speed'] == 8.0
     assert data['data']['activities'][0]['descent'] is None
-    assert data['data']['activities'][0]['distance'] == 10.0
+    assert data['data']['activities'][0]['distance'] == 8.0
     assert data['data']['activities'][0]['max_alt'] is None
-    assert data['data']['activities'][0]['max_speed'] == 10.0
+    assert data['data']['activities'][0]['max_speed'] == 8.0
     assert data['data']['activities'][0]['min_alt'] is None
     assert data['data']['activities'][0]['moving'] == '1:00:00'
     assert data['data']['activities'][0]['pauses'] is None
     assert data['data']['activities'][0]['with_gpx'] is False
 
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 2
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[0]['value'] == 8.0
+    assert records[1]['sport_id'] == 2
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[1]['value'] == '1:00:00'
+    assert records[2]['sport_id'] == 2
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[2]['value'] == 8.0
+    assert records[3]['sport_id'] == 2
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Tue, 15 May 2018 14:05:00 GMT'
+    assert records[3]['value'] == 8.0
+
 
 def test_edit_an_activity_wo_gpx_partial(
-    app, user_1, sport_1_cycling, activity_cycling_user_1
+    app, user_1, sport_1_cycling
 ):
-    activity_cycling_user_1.title = 'cycling - 2018-01-01 00:00:00'
-
     client = app.test_client()
     resp_login = client.post(
         '/api/auth/login',
@@ -269,6 +374,68 @@ def test_edit_an_activity_wo_gpx_partial(
         )),
         content_type='application/json'
     )
+    response = client.post(
+        '/api/activities/no_gpx',
+        content_type='application/json',
+        data=json.dumps(dict(
+            sport_id=1,
+            duration=3600,
+            activity_date='2018-05-14 14:05',
+            distance=7
+        )),
+        headers=dict(
+            Authorization='Bearer ' + json.loads(
+                resp_login.data.decode()
+            )['auth_token']
+        )
+    )
+
+    data = json.loads(response.data.decode())
+
+    assert response.status_code == 201
+    assert 'created' in data['status']
+    assert len(data['data']['activities']) == 1
+    assert 'creation_date' in data['data']['activities'][0]
+    assert data['data']['activities'][0][
+               'activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'  # noqa
+    assert data['data']['activities'][0]['user_id'] == 1
+    assert data['data']['activities'][0]['sport_id'] == 1
+    assert data['data']['activities'][0]['duration'] == '1:00:00'
+    assert data['data']['activities'][0]['title'] == 'Cycling - 2018-05-14 14:05:00'  # noqa
+    assert data['data']['activities'][0]['ascent'] is None
+    assert data['data']['activities'][0]['ave_speed'] == 7.0
+    assert data['data']['activities'][0]['descent'] is None
+    assert data['data']['activities'][0]['distance'] == 7.0
+    assert data['data']['activities'][0]['max_alt'] is None
+    assert data['data']['activities'][0]['max_speed'] == 7.0
+    assert data['data']['activities'][0]['min_alt'] is None
+    assert data['data']['activities'][0]['moving'] == '1:00:00'
+    assert data['data']['activities'][0]['pauses'] is None
+    assert data['data']['activities'][0]['with_gpx'] is False
+
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 1
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[0]['value'] == 7.0
+    assert records[1]['sport_id'] == 1
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[1]['value'] == '1:00:00'
+    assert records[2]['sport_id'] == 1
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[2]['value'] == 7.0
+    assert records[3]['sport_id'] == 1
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[3]['value'] == 7.0
+
     response = client.patch(
         '/api/activities/1',
         content_type='application/json',
@@ -289,22 +456,45 @@ def test_edit_an_activity_wo_gpx_partial(
     assert 'success' in data['status']
     assert len(data['data']['activities']) == 1
     assert 'creation_date' in data['data']['activities'][0]
-    assert data['data']['activities'][0]['activity_date'] == 'Mon, 01 Jan 2018 00:00:00 GMT'  # noqa
+    assert data['data']['activities'][0]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'  # noqa
     assert data['data']['activities'][0]['user_id'] == 1
     assert data['data']['activities'][0]['sport_id'] == 1
-    assert data['data']['activities'][0]['duration'] == '0:17:04'
-    assert data['data']['activities'][0]['title'] == 'cycling - 2018-01-01 00:00:00'  # noqa
+    assert data['data']['activities'][0]['duration'] == '1:00:00'
+    assert data['data']['activities'][0]['title'] == 'Cycling - 2018-05-14 14:05:00'  # noqa
     assert data['data']['activities'][0]['ascent'] is None
-    assert data['data']['activities'][0]['ave_speed'] == 35.16
+    assert data['data']['activities'][0]['ave_speed'] == 10.0
     assert data['data']['activities'][0]['descent'] is None
     assert data['data']['activities'][0]['distance'] == 10.0
     assert data['data']['activities'][0]['max_alt'] is None
-    assert data['data']['activities'][0]['max_speed'] == 35.16
+    assert data['data']['activities'][0]['max_speed'] == 10.0
     assert data['data']['activities'][0]['min_alt'] is None
-    assert data['data']['activities'][0]['moving'] is None  # no calculated
+    assert data['data']['activities'][0]['moving'] == '1:00:00'
     assert data['data']['activities'][0]['pauses'] is None
     assert data['data']['activities'][0]['with_gpx'] is False
 
+    records = data['data']['activities'][0]['records']
+    assert len(records) == 4
+    assert records[0]['sport_id'] == 1
+    assert records[0]['activity_id'] == 1
+    assert records[0]['record_type'] == 'MS'
+    assert records[0]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[0]['value'] == 10.0
+    assert records[1]['sport_id'] == 1
+    assert records[1]['activity_id'] == 1
+    assert records[1]['record_type'] == 'LD'
+    assert records[1]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[1]['value'] == '1:00:00'
+    assert records[2]['sport_id'] == 1
+    assert records[2]['activity_id'] == 1
+    assert records[2]['record_type'] == 'FD'
+    assert records[2]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[2]['value'] == 10.0
+    assert records[3]['sport_id'] == 1
+    assert records[3]['activity_id'] == 1
+    assert records[3]['record_type'] == 'AS'
+    assert records[3]['activity_date'] == 'Mon, 14 May 2018 14:05:00 GMT'
+    assert records[3]['value'] == 10.0
+
 
 def test_edit_an_activity_wo_gpx_invalid_payload(
     app, user_1, sport_1_cycling, activity_cycling_user_1