Fix payment reference issue with duplicate resolver

members/migrations/0013_auto_20170601_1822.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2017-06-01 15:22
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0012_memberconflict'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='payment',
+            name='member',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='payments', to='members.Member'),
+        ),
+    ]