diff --git a/xos/attic/header.py b/xos/attic/header.py
index afa4e4c..7ecc68a 100644
--- a/xos/attic/header.py
+++ b/xos/attic/header.py
@@ -1,7 +1,7 @@
 from django.db import models
 from django.db.models import *
-from core.models import Service, PlCoreBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, TenantRoot, NetworkParameter, NetworkParameterType, Port, AddressPool, User
-from core.models.plcorebase import StrippedCharField
+from core.models import Service, XOSBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, TenantRoot, NetworkParameter, NetworkParameterType, Port, AddressPool, User
+from core.models.xosbase import StrippedCharField
 import os
 from django.db import models, transaction
 from django.forms.models import model_to_dict
diff --git a/xos/header.py b/xos/header.py
deleted file mode 100644
index afa4e4c..0000000
--- a/xos/header.py
+++ /dev/null
@@ -1,21 +0,0 @@
-from django.db import models
-from django.db.models import *
-from core.models import Service, PlCoreBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, TenantRoot, NetworkParameter, NetworkParameterType, Port, AddressPool, User
-from core.models.plcorebase import StrippedCharField
-import os
-from django.db import models, transaction
-from django.forms.models import model_to_dict
-from django.db.models import Q
-from operator import itemgetter, attrgetter, methodcaller
-from core.models import Tag
-from core.models.service import LeastLoadedNodeScheduler
-from services.vrouter.models import VRouterService, VRouterTenant
-import traceback
-from xos.exceptions import *
-from xos.config import Config
-
-class ConfigurationError(Exception):
-    pass
-
-CORD_SUBSCRIBER_KIND = "CordSubscriberRoot"
-
diff --git a/xos/header.py b/xos/header.py
new file mode 120000
index 0000000..721b5c0
--- /dev/null
+++ b/xos/header.py
@@ -0,0 +1 @@
+attic/header.py
\ No newline at end of file