try to fix missing import

Author: TamaroWalter

backup/moodle2/backup_moodleoverflow_stepslib.php

@@ -130,6 +130,7 @@ protected function define_structure() {
         $read->annotate_ids('user', 'userid');
         $rating->annotate_ids('user', 'userid');
         $track->annotate_ids('user', 'userid');
+        $moodleoverflow->annotate_ids('grade_category', 'gradecat');
 
         // Define file annotations (we do not use itemid in this example).
         $moodleoverflow->annotate_files('mod_moodleoverflow', 'intro', null);

backup/moodle2/restore_moodleoverflow_stepslib.php

@@ -89,6 +89,16 @@ protected function process_moodleoverflow($data) {
         $data = (object) $data;
         $data->course = $this->get_courseid();
 
+        // Map grade category to the restored category id (if present).
+        if (!empty($data->gradecat)) {
+            $mapped = $this->get_mappingid('grade_category', $data->gradecat);
+            if ($mapped !== null) {
+                $data->gradecat = $mapped;
+            } else {
+                // If mapping not found, clear or handle as appropriate (keeping null avoids pointing to wrong category).
+                $data->gradecat = null;
+            }
+        }
         if (empty($data->timecreated)) {
             $data->timecreated = time();
         }