diff --git a/backend/scripts/apply-bisaya-course-refresh.js b/backend/scripts/apply-bisaya-course-refresh.js
index 266839f..3d7c7c8 100644
--- a/backend/scripts/apply-bisaya-course-refresh.js
+++ b/backend/scripts/apply-bisaya-course-refresh.js
@@ -98,21 +98,26 @@ const LESSON_DIDACTICS = {
 async function resetBisayaProgress(courseIds) {
   if (courseIds.length === 0) return { lessonProgress: 0, exerciseProgress: 0 };
 
-  const lessonIds = await sequelize.query(
-    `SELECT id FROM community.vocab_course_lesson WHERE course_id = ANY(:courseIds)`,
-    {
-      replacements: { courseIds },
-      type: sequelize.QueryTypes.SELECT
-    }
-  );
+  const lessonIds = await VocabCourseLesson.findAll({
+    where: {
+      courseId: {
+        [Op.in]: courseIds
+      }
+    },
+    attributes: ['id']
+  });
 
-  const exerciseIds = await sequelize.query(
-    `SELECT id FROM community.vocab_grammar_exercise WHERE lesson_id = ANY(:lessonIds)`,
-    {
-      replacements: { lessonIds: lessonIds.map((row) => row.id) || [0] },
-      type: sequelize.QueryTypes.SELECT
-    }
-  );
+  const numericLessonIds = lessonIds.map((row) => row.id);
+  const exerciseIds = numericLessonIds.length > 0
+    ? await VocabGrammarExercise.findAll({
+        where: {
+          lessonId: {
+            [Op.in]: numericLessonIds
+          }
+        },
+        attributes: ['id']
+      })
+    : [];
 
   const deletedLessonProgress = await VocabCourseProgress.destroy({
     where: { courseId: { [Op.in]: courseIds } }