diff --git a/backup/moodle2/backup_stepslib.php b/backup/moodle2/backup_stepslib.php
index 870b40af311..b1d07025e3d 100644
--- a/backup/moodle2/backup_stepslib.php
+++ b/backup/moodle2/backup_stepslib.php
@@ -926,6 +926,7 @@ class backup_gradebook_structure_step extends backup_structure_step {
     }
 
     protected function define_structure() {
+        global $CFG, $DB;
 
         // are we including user info?
         $userinfo = $this->get_setting_value('users');
@@ -1017,7 +1018,18 @@ class backup_gradebook_structure_step extends backup_structure_step {
 
         $letter->set_source_table('grade_letters', array('contextid' => backup::VAR_CONTEXTID));
 
-        $grade_setting->set_source_table('grade_settings', array('courseid' => backup::VAR_COURSEID));
+        // Set the grade settings source, forcing the inclusion of minmaxtouse if not present.
+        $settings = array();
+        $rs = $DB->get_recordset('grade_settings', array('courseid' => $this->get_courseid()));
+        foreach ($rs as $record) {
+            $settings[$record->name] = $record;
+        }
+        $rs->close();
+        if (!isset($settings['minmaxtouse'])) {
+            $settings['minmaxtouse'] = (object) array('name' => 'minmaxtouse', 'value' => $CFG->grade_minmaxtouse);
+        }
+        $grade_setting->set_source_array($settings);
+
 
         // Annotations (both as final as far as they are going to be exported in next steps)
         $grade_item->annotate_ids('scalefinal', 'scaleid'); // Straight as scalefinal because it's > 0
diff --git a/backup/moodle2/restore_stepslib.php b/backup/moodle2/restore_stepslib.php
index 593384f850e..17d6fedb1d3 100644
--- a/backup/moodle2/restore_stepslib.php
+++ b/backup/moodle2/restore_stepslib.php
@@ -459,6 +459,9 @@ class restore_gradebook_structure_step extends restore_structure_step {
         }
         $rs->close();
 
+        // Check what to do with the minmaxtouse setting.
+        $this->check_minmaxtouse();
+
         // Freeze gradebook calculations if needed.
         $this->gradebook_calculation_freeze();
 
@@ -483,6 +486,66 @@ class restore_gradebook_structure_step extends restore_structure_step {
             upgrade_extra_credit_weightoverride($this->get_courseid());
         }
     }
+
+    /**
+     * Checks what should happen with the course grade setting minmaxtouse.
+     *
+     * This is related to the upgrade step at the time the setting was added.
+     *
+     * @see MDL-48618
+     * @return void
+     */
+    protected function check_minmaxtouse() {
+        global $CFG, $DB;
+        require_once($CFG->libdir . '/gradelib.php');
+
+        $userinfo = $this->task->get_setting_value('users');
+        $settingname = 'minmaxtouse';
+        $courseid = $this->get_courseid();
+        $minmaxtouse = $DB->get_field('grade_settings', 'value', array('courseid' => $courseid, 'name' => $settingname));
+        $version28start = 2014111000.00;
+        $version28last = 2014111006.05;
+
+        if ($minmaxtouse === false) {
+            // The setting was not found because this setting did not exist at the time the backup was made.
+            $version = $this->get_task()->get_info()->moodle_version;
+
+            if ($version < $version28start) {
+                // We need to set it to use grade_item, but only if the site-wide setting is different. No need to notice them.
+                if ($CFG->grade_minmaxtouse != GRADE_MIN_MAX_FROM_GRADE_ITEM) {
+                    grade_set_setting($courseid, $settingname, GRADE_MIN_MAX_FROM_GRADE_ITEM);
+                }
+
+            } else if ($version >= $version28start && $version < $version28last) {
+                // They should be using grade_grade when the course has inconsistencies.
+
+                $sql = "SELECT gi.id
+                          FROM {grade_items} gi
+                          JOIN {grade_grades} gg
+                            ON gg.itemid = gi.id
+                         WHERE gi.courseid = ?
+                           AND (gi.itemtype != ? AND gi.itemtype != ?)
+                           AND (gg.rawgrademax != gi.grademax OR gg.rawgrademin != gi.grademin)";
+
+                // The course can only have inconsistencies when we restore the user info,
+                // we do not need to act on existing grades that were not restored as part of this backup.
+                if ($userinfo && $DB->record_exists_sql($sql, array($courseid, 'course', 'category'))) {
+
+                    // Display the notice as we do during upgrade.
+                    set_config('show_min_max_grades_changed_' . $courseid, 1);
+
+                    if ($CFG->grade_minmaxtouse != GRADE_MIN_MAX_FROM_GRADE_GRADE) {
+                        // We need set the setting as their site-wise setting is not GRADE_MIN_MAX_FROM_GRADE_GRADE.
+                        // If they are using the site-wide grade_grade setting, we only want to notice them.
+                        grade_set_setting($courseid, $settingname, GRADE_MIN_MAX_FROM_GRADE_GRADE);
+                    }
+                }
+
+            } else {
+                // This should never happen because from now on minmaxtouse is always saved in backups.
+            }
+        }
+    }
 }
 
 /**