diff --git a/planetstack/core/fixtures/initial_data.json b/planetstack/core/fixtures/initial_data.json
index 3657b6b..c0c6f38 100644
--- a/planetstack/core/fixtures/initial_data.json
+++ b/planetstack/core/fixtures/initial_data.json
@@ -62,7 +62,6 @@
         "updated": "2013-12-17T18:00:47.910Z", 
         "name": "Stanford", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.stanford.edu/", 
@@ -84,7 +83,6 @@
         "updated": "2013-12-17T18:00:38.431Z", 
         "name": "Washington", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "https://www.washington.edu/", 
@@ -106,7 +104,6 @@
         "updated": "2013-12-17T18:00:28.495Z", 
         "name": "Princeton", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://princeton.edu/", 
@@ -128,7 +125,6 @@
         "updated": "2013-12-17T18:00:18.964Z", 
         "name": "GeorgiaTech", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.gatech.edu/", 
@@ -150,7 +146,6 @@
         "updated": "2013-12-17T18:00:07.704Z", 
         "name": "MaxPlanck", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.mpi-sws.mpg.de/", 
@@ -172,7 +167,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Atlanta", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -194,7 +188,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Chicago", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -216,7 +209,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Houston", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -238,7 +230,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Kansas City", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -260,7 +251,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Los Angeles", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -282,7 +272,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 New York", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -304,7 +293,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Salt Lake City", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -326,7 +314,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Seattle", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -348,7 +335,6 @@
         "updated": "2013-06-21T21:17:13.982Z", 
         "name": "I2 Washington DC", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu", 
@@ -370,7 +356,6 @@
         "updated": "2013-12-17T17:30:14.491Z", 
         "name": "ON.Lab", 
         "created": "2013-04-03T23:14:11.072Z", 
-        "tenant_id": "", 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.onlab.us/", 
@@ -397,7 +382,6 @@
         "updated": "2013-12-17T18:21:43.870Z", 
         "name": "I2 Singapore", 
         "created": "2013-12-17T17:08:49.669Z", 
-        "tenant_id": null, 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.internet2.edu/", 
@@ -419,7 +403,6 @@
         "updated": "2013-12-17T18:08:01.373Z", 
         "name": "Arizona", 
         "created": "2013-12-17T18:07:14.190Z", 
-        "tenant_id": null, 
         "enabled": true, 
         "longitude": null, 
         "site_url": "http://www.cs.arizona.edu/",