[otrs] Problem with Auto Response Subject line

It appears something got changed with the auto response subject line settings on our system. Here is what we have in the Auto Response Subject Line setup: [MFAH Helpdesk:] And here is what I am getting back as a customer when I send an email to helpdesk: Actual email subject line: test Auto Response email Subject line received by customer: [MFAH Helpdesk:1001748] [MFAH Helpdesk:] I haven't made any changes recently and this WAS working. Do I need to escape any of the text brackets I have defined as part of the response setup subject line? Thank you! Scott R. Morgan