diff --git a/gracedb/superevents/migrations/0005_add_coinc_far_and_em_type.py b/gracedb/superevents/migrations/0005_add_coinc_far_and_em_type.py
deleted file mode 100644
index 7446360561e9fe1adfc64873789bb5a1cf2e8c15..0000000000000000000000000000000000000000
--- a/gracedb/superevents/migrations/0005_add_coinc_far_and_em_type.py
+++ /dev/null
@@ -1,26 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-05-15 18:07
-from __future__ import unicode_literals
-
-import django.core.validators
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('superevents', '0004_populate_voevent_fields'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='Superevent',
-            name='coinc_far',
-            field=models.FloatField(blank=True, null=True),
-        ),
-        migrations.AddField(
-            model_name='Superevent',
-            name='em_type',
-            field=models.CharField(null=True, blank=True, max_length=100),
-        ),
-    ]
diff --git a/gracedb/superevents/migrations/0006_add_coinc_far_and_em_type.py b/gracedb/superevents/migrations/0006_add_coinc_far_and_em_type.py
deleted file mode 100644
index 90a73790aa455ff6891f527b7e49a444886bc501..0000000000000000000000000000000000000000
--- a/gracedb/superevents/migrations/0006_add_coinc_far_and_em_type.py
+++ /dev/null
@@ -1,26 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-05-15 18:07
-from __future__ import unicode_literals
-
-import django.core.validators
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('superevents', '0005_auto_20190919_1957'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='Superevent',
-            name='coinc_far',
-            field=models.FloatField(blank=True, null=True),
-        ),
-        migrations.AddField(
-            model_name='Superevent',
-            name='em_type',
-            field=models.CharField(null=True, blank=True, max_length=100),
-        ),
-    ]
diff --git a/gracedb/superevents/migrations/0006_add_raven_voevent_fields.py b/gracedb/superevents/migrations/0006_auto_20191112_2004.py
similarity index 58%
rename from gracedb/superevents/migrations/0006_add_raven_voevent_fields.py
rename to gracedb/superevents/migrations/0006_auto_20191112_2004.py
index 7efed677d6310f09f5cc8601a8477cedeea119e1..02bcd1e69d09e63d7dfc42393db81a6ee62e581d 100644
--- a/gracedb/superevents/migrations/0006_add_raven_voevent_fields.py
+++ b/gracedb/superevents/migrations/0006_auto_20191112_2004.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-05-15 18:07
+# Generated by Django 1.11.23 on 2019-11-12 20:04
 from __future__ import unicode_literals
 
 import django.core.validators
@@ -9,48 +9,59 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('superevents', '0005_add_coinc_far_and_em_type'),
+        ('superevents', '0005_auto_20190919_1957'),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='voevent',
-            name='raven_coinc',
-            field=models.BooleanField(default=False),
+            model_name='superevent',
+            name='coinc_far',
+            field=models.FloatField(blank=True, null=True),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='superevent',
+            name='em_type',
+            field=models.CharField(blank=True, max_length=100, null=True),
         ),
         migrations.AddField(
             model_name='voevent',
             name='combined_skymap_filename',
             field=models.CharField(blank=True, default=None, max_length=100, null=True),
         ),
+        migrations.AddField(
+            model_name='voevent',
+            name='delta_t',
+            field=models.FloatField(blank=True, default=None, null=True, validators=[django.core.validators.MinValueValidator(-1000), django.core.validators.MaxValueValidator(1000)]),
+        ),
         migrations.AddField(
             model_name='voevent',
             name='ext_gcn',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
+            field=models.CharField(blank=True, default='', editable=False, max_length=100),
         ),
         migrations.AddField(
             model_name='voevent',
             name='ext_pipeline',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
+            field=models.CharField(blank=True, default='', editable=False, max_length=100),
         ),
         migrations.AddField(
             model_name='voevent',
             name='ext_search',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
+            field=models.CharField(blank=True, default='', editable=False, max_length=100),
         ),
         migrations.AddField(
             model_name='voevent',
-            name='time_coinc_far',
-            field=models.FloatField(blank=True, default=None, null=True),
+            name='raven_coinc',
+            field=models.BooleanField(default=False),
         ),
         migrations.AddField(
             model_name='voevent',
             name='space_coinc_far',
-            field=models.FloatField(blank=True, default=None, null=True),
+            field=models.FloatField(blank=True, default=None, null=True, validators=[django.core.validators.MinValueValidator(0.0)]),
         ),
         migrations.AddField(
             model_name='voevent',
-            name='delta_t',
-            field=models.FloatField(blank=True, default=None, null=True),
+            name='time_coinc_far',
+            field=models.FloatField(blank=True, default=None, null=True, validators=[django.core.validators.MinValueValidator(0.0)]),
         ),
     ]
diff --git a/gracedb/superevents/migrations/0007_add_raven_voevent_fields.py b/gracedb/superevents/migrations/0007_add_raven_voevent_fields.py
deleted file mode 100644
index 176f4f5cce4f382dadff2ec71e51318c9c684940..0000000000000000000000000000000000000000
--- a/gracedb/superevents/migrations/0007_add_raven_voevent_fields.py
+++ /dev/null
@@ -1,56 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-05-15 18:07
-from __future__ import unicode_literals
-
-import django.core.validators
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('superevents', '0006_add_coinc_far_and_em_type'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='voevent',
-            name='raven_coinc',
-            field=models.BooleanField(default=False),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='combined_skymap_filename',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='ext_gcn',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='ext_pipeline',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='ext_search',
-            field=models.CharField(blank=True, default=None, max_length=100, null=True),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='time_coinc_far',
-            field=models.FloatField(blank=True, default=None, null=True),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='space_coinc_far',
-            field=models.FloatField(blank=True, default=None, null=True),
-        ),
-        migrations.AddField(
-            model_name='voevent',
-            name='delta_t',
-            field=models.FloatField(blank=True, default=None, null=True),
-        ),
-    ]