message: Uncomment write command in migration script
diff: @@ -122,10 +122,8 @@ class FileUnitMigration {
  fileUnitObj._id = new ObjectID(fileUnitObj._id);
  fileUnitObj._course = new ObjectID(fileUnitObj._course);
  - /*
  const unitAfterReplace = await mongoose.connection.collection('units')
  .findOneAndReplace({'_id': fileUnit._id}, fileUnitObj);
  - */
  return fileUnitObj;
  }
  }));
  