Backup everything

AndroidManifest.xml

@@ -59,7 +59,6 @@
 
     <application
         android:name=".MainApp"
-        android:fullBackupContent="@xml/my_backup_rules"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/Theme.ownCloud.Toolbar"

res/xml/my_backup_rules.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<full-backup-content>
-    <exclude domain="external" path="nc_persistence" />
-</full-backup-content>