diff --git a/backup/moodle2/backup_course_task.class.php b/backup/moodle2/backup_course_task.class.php
index 11f245f20aa..5ed54e91cfc 100644
--- a/backup/moodle2/backup_course_task.class.php
+++ b/backup/moodle2/backup_course_task.class.php
@@ -80,6 +80,9 @@ class backup_course_task extends backup_task {
             $this->add_step(new backup_enrolments_structure_step('course_enrolments', 'enrolments.xml'));
         }
 
+        // Annotate enrolment custom fields.
+        $this->add_step(new backup_enrolments_execution_step('annotate_enrol_custom_fields'));
+
         // Annotate all the groups and groupings belonging to the course
         $this->add_step(new backup_annotate_course_groups_and_groupings('annotate_course_groups'));
 
diff --git a/backup/moodle2/backup_enrol_plugin.class.php b/backup/moodle2/backup_enrol_plugin.class.php
new file mode 100644
index 00000000000..a9ede547310
--- /dev/null
+++ b/backup/moodle2/backup_enrol_plugin.class.php
@@ -0,0 +1,39 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Defines backup_enrol_plugin class.
+ *
+ * @package     core_backup
+ * @subpackage  moodle2
+ * @category    backup
+ * @copyright   2014 University of Wisconsin
+ * @author      Matt petro
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Base class for enrol backup plugins.
+ *
+ * @package   core_backup
+ * @copyright 2014 University of Wisconsin
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class backup_enrol_plugin extends backup_plugin {
+    // Use default parent behaviour.
+}
diff --git a/backup/moodle2/backup_plan_builder.class.php b/backup/moodle2/backup_plan_builder.class.php
index b78fbad5063..c359096e44f 100644
--- a/backup/moodle2/backup_plan_builder.class.php
+++ b/backup/moodle2/backup_plan_builder.class.php
@@ -44,6 +44,7 @@ require_once($CFG->dirroot . '/backup/moodle2/backup_theme_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_report_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_coursereport_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_plagiarism_plugin.class.php');
+require_once($CFG->dirroot . '/backup/moodle2/backup_enrol_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_subplugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_settingslib.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_stepslib.php');
diff --git a/backup/moodle2/backup_stepslib.php b/backup/moodle2/backup_stepslib.php
index de35cc37cfb..7830271a0cc 100644
--- a/backup/moodle2/backup_stepslib.php
+++ b/backup/moodle2/backup_stepslib.php
@@ -555,7 +555,8 @@ class backup_enrolments_structure_step extends backup_structure_step {
 
         $enrol->annotate_ids('role', 'roleid');
 
-        //TODO: let plugins annotate custom fields too and add more children
+        // Add enrol plugin structure.
+        $this->add_plugin_structure('enrol', $enrol, false);
 
         return $enrolments;
     }
@@ -1875,6 +1876,47 @@ class backup_activity_grade_items_to_ids extends backup_execution_step {
     }
 }
 
+
+/**
+ * This step allows enrol plugins to annotate custom fields.
+ *
+ * @package   core_backup
+ * @copyright 2014 University of Wisconsin
+ * @author    Matt Petro
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class backup_enrolments_execution_step extends backup_execution_step {
+
+    /**
+     * Function that will contain all the code to be executed.
+     */
+    protected function define_execution() {
+        global $DB;
+
+        $plugins = enrol_get_plugins(true);
+        $enrols = $DB->get_records('enrol', array(
+                'courseid' => $this->task->get_courseid()));
+
+        // Allow each enrol plugin to add annotations.
+        foreach ($enrols as $enrol) {
+            if (isset($plugins[$enrol->enrol])) {
+                $plugins[$enrol->enrol]->backup_annotate_custom_fields($this, $enrol);
+            }
+        }
+    }
+
+    /**
+     * Annotate a single name/id pair.
+     * This can be called from {@link enrol_plugin::backup_annotate_custom_fields()}.
+     *
+     * @param string $itemname
+     * @param int $itemid
+     */
+    public function annotate_id($itemname, $itemid) {
+        backup_structure_dbops::insert_backup_ids_record($this->get_backupid(), $itemname, $itemid);
+    }
+}
+
 /**
  * This step will annotate all the groups and groupings belonging to the course
  */
diff --git a/backup/moodle2/restore_enrol_plugin.class.php b/backup/moodle2/restore_enrol_plugin.class.php
new file mode 100644
index 00000000000..92d945e4bda
--- /dev/null
+++ b/backup/moodle2/restore_enrol_plugin.class.php
@@ -0,0 +1,39 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Defines restore_enrol_plugin class.
+ *
+ * @package     core_backup
+ * @subpackage  moodle2
+ * @category    backup
+ * @copyright   2014 University of Wisconsin
+ * @author      Matt petro
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Base class for enrol backup plugins.
+ *
+ * @package   core_backup
+ * @copyright 2014 University of Wisconsin
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class restore_enrol_plugin extends restore_plugin {
+    // Use default parent behaviour.
+}
diff --git a/backup/moodle2/restore_plan_builder.class.php b/backup/moodle2/restore_plan_builder.class.php
index b7c65ef29b0..ae48ec93dfc 100644
--- a/backup/moodle2/restore_plan_builder.class.php
+++ b/backup/moodle2/restore_plan_builder.class.php
@@ -43,6 +43,7 @@ require_once($CFG->dirroot . '/backup/moodle2/restore_report_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/restore_coursereport_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/restore_plagiarism_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/restore_gradingform_plugin.class.php');
+require_once($CFG->dirroot . '/backup/moodle2/restore_enrol_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_qtype_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_format_plugin.class.php');
@@ -52,6 +53,7 @@ require_once($CFG->dirroot . '/backup/moodle2/backup_report_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_coursereport_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_plagiarism_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/backup_gradingform_plugin.class.php');
+require_once($CFG->dirroot . '/backup/moodle2/backup_enrol_plugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/restore_subplugin.class.php');
 require_once($CFG->dirroot . '/backup/moodle2/restore_settingslib.php');
 require_once($CFG->dirroot . '/backup/moodle2/restore_stepslib.php');
diff --git a/backup/moodle2/restore_stepslib.php b/backup/moodle2/restore_stepslib.php
index ee4fa9d2c83..9bdee8a4011 100644
--- a/backup/moodle2/restore_stepslib.php
+++ b/backup/moodle2/restore_stepslib.php
@@ -1884,12 +1884,12 @@ class restore_enrolments_structure_step extends restore_structure_step {
 
     protected function define_structure() {
 
-        $paths = array();
+        $enrol = new restore_path_element('enrol', '/enrolments/enrols/enrol');
+        $enrolment = new restore_path_element('enrolment', '/enrolments/enrols/enrol/user_enrolments/enrolment');
+        // Attach local plugin stucture to enrol element.
+        $this->add_plugin_structure('enrol', $enrol);
 
-        $paths[] = new restore_path_element('enrol', '/enrolments/enrols/enrol');
-        $paths[] = new restore_path_element('enrolment', '/enrolments/enrols/enrol/user_enrolments/enrolment');
-
-        return $paths;
+        return array($enrol, $enrolment);
     }
 
     /**
diff --git a/lib/enrollib.php b/lib/enrollib.php
index 2df68628087..75072e23389 100644
--- a/lib/enrollib.php
+++ b/lib/enrollib.php
@@ -2278,6 +2278,16 @@ abstract class enrol_plugin {
         force_current_language($oldforcelang);
     }
 
+    /**
+     * Backup execution step hook to annotate custom fields.
+     *
+     * @param backup_enrolments_execution_step $step
+     * @param stdClass $enrol
+     */
+    public function backup_annotate_custom_fields(backup_enrolments_execution_step $step, stdClass $enrol) {
+        // Override as necessary to annotate custom fields in the enrol table.
+    }
+
     /**
      * Automatic enrol sync executed during restore.
      * Useful for automatic sync by course->idnumber or course category.