diff --git a/xos/attic/header.py b/xos/attic/header.py
index b491059..3a6c4e9 100644
--- a/xos/attic/header.py
+++ b/xos/attic/header.py
@@ -1,6 +1,6 @@
 from django.db import models
-from core.models import Service, PlCoreBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, NetworkParameter, NetworkParameterType, Port, AddressPool
-from core.models.plcorebase import StrippedCharField
+from core.models import Service, XOSBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, NetworkParameter, NetworkParameterType, Port, AddressPool
+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/attic/header.py.orig b/xos/attic/header.py.orig
deleted file mode 100644
index 1ba8b4d..0000000
--- a/xos/attic/header.py.orig
+++ /dev/null
@@ -1,24 +0,0 @@
-from django.db import models
-from core.models import Service, PlCoreBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, NetworkParameter, NetworkParameterType, Port, AddressPool
-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.volt.models import CordSubscriberRoot
-import traceback
-from xos.exceptions import *
-from xos.config import Config
-from django.contrib.contenttypes.models import ContentType
-from django.contrib.contenttypes.fields import GenericForeignKey
-
-class ConfigurationError(Exception):
-    pass
-
-VTR_KIND = "vTR"
-
-CORD_USE_VTN = getattr(Config(), "networking_use_vtn", False)
-