Bulk Stock updater not triggering stock notification

I seem to have run into a problem.

I've installed both the uc_stock_notify module as well as the uc_bulk_stock_updater module. If I go product the product page and amend the stock levels there, notification is being sent out. However, if I update the stock levels with the bulk stock updater, no email is being sent out.

I'm not sure if this is because the bulk stock updating isn't triggering something that it should, or because the stock notfiy isn't monitoring what it should.

Thanks