diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index a3f825e4..7081ce49 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -325,16 +325,15 @@ class Device(Thing):
         actions = copy.copy(self.actions)
         actions.sort(key=lambda x: x.created)
         allocates =  []
-        from ereuse_devicehub.resources.action.models import Snapshot, Allocate, Deallocate, Live
         for act in actions:
-            if isinstance(act, Snapshot):
+            if act.type == 'Snapshot':
                 snapshot = act
                 lifestimes = snapshot.get_last_lifetimes()
                 lifetime = 0
                 if lifestimes:
                     lifetime = lifestimes[0]['lifetime']
 
-            if isinstance(act, Allocate):
+            if act.type == 'Allocate':
                 allo = {'type': 'Allocate',
                         'userCode': act.final_user_code,
                         'numUsers': act.end_users,
@@ -345,15 +344,19 @@ class Device(Thing):
                         'allocateLifetime': lifetime}
                 allocates.append(allo)
 
-            if isinstance(act, Live):
+            if act.type == 'Live':
                 allocate = copy.copy(allo)
-                lifetime = act.usage_time_hdd
+                lifetime = act.usage_time_hdd.total_seconds()
                 allocate['type'] = 'Live'
                 allocate['liveCreate'] = act.created
+                for hd in lifestimes:
+                    if hd['serial_number'] == act.serial_number:
+                        lifetime = hd['lifetime']
+                        break
                 allocate['liveLifetime'] = lifetime
                 allocates.append(allocate)
 
-            if isinstance(act, Deallocate):
+            if act.type == 'Deallocate':
                 deallo = {'type': 'Deallocate',
                           'userCode': '',
                           'numUsers': '',
@@ -364,7 +367,7 @@ class Device(Thing):
                           'allocateLifetime': 0}
                 allocates.append(deallo)
 
-            return allocates
+        return allocates
 
     def __lt__(self, other):
         return self.id < other.id
diff --git a/tests/test_documents.py b/tests/test_documents.py
index bb7d802b..f76ca0ed 100644
--- a/tests/test_documents.py
+++ b/tests/test_documents.py
@@ -11,7 +11,7 @@ from ereuse_utils.test import ANY
 
 from ereuse_devicehub.client import Client, UserClient
 from ereuse_devicehub.devicehub import Devicehub
-from ereuse_devicehub.resources.action.models import Snapshot
+from ereuse_devicehub.resources.action.models import Snapshot, Allocate, Live
 from ereuse_devicehub.resources.documents import documents
 from ereuse_devicehub.resources.device import models as d
 from ereuse_devicehub.resources.lot.models import Lot
@@ -110,7 +110,24 @@ def test_export_csv_permitions(user: UserClient, user2: UserClient, client: Clie
 @pytest.mark.mvp
 def test_export_csv_actions(user: UserClient, user2: UserClient, client: Client):
     """Test export device information in a csv file with others users."""
-    snapshot, _ = user.post(file('basic.snapshot'), res=Snapshot)
+    acer = file('acer.happy.battery.snapshot')
+    snapshot, _ = user.post(acer, res=Snapshot)
+    device_id = snapshot['device']['id']
+    post_request = {"transaction": "ccc", "name": "John", "endUsers": 1,
+                    "devices": [device_id], "description": "aaa",
+                    "finalUserCode": "abcdefjhi",
+                    "startTime": "2020-11-01T02:00:00+00:00",
+                    "endTime": "2020-12-01T02:00:00+00:00"
+    }
+
+    user.post(res=Allocate, data=post_request)
+    hdd = [c for c in acer['components'] if c['type'] == 'HardDrive'][0]
+    hdd_action = [a for a in hdd['actions'] if a['type'] == 'TestDataStorage'][0]
+    hdd_action['lifetime'] += 1000
+    acer.pop('elapsed')
+    acer['licence_version'] = '1.0.0'
+    snapshot, _ = client.post(acer, res=Live)
+
     csv_user, _ = user.get(res=documents.DocumentDef.t,
                           item='actions/',
                           accept='text/csv',
@@ -131,7 +148,7 @@ def test_export_csv_actions(user: UserClient, user2: UserClient, client: Client)
     assert len(csv_user2) == 0
 
 
-@pytest.mark.mvp
+@pytest.mark.mvp 
 def test_export_basic_snapshot(user: UserClient):
     """Test export device information in a csv file."""
     snapshot, _ = user.post(file('basic.snapshot'), res=Snapshot)