I sent an email to the mailbox (subject- Having issues with software). The script turned that email into an issue in Mantis. I then login as the mailbox to reply to the sender (subject- RE: Having issues with software). The sender replies back (subject- RE: Having issues with software), and the plugin turned that reply into a new issue, rather than a note to the original.bug_report_mail is able to recognize if an email is a reply to an already opened issue and adds the content as a note.
Should I have done something special so that bug_report_mail can add a note to existing issue rather than create a new one? Am I misunderstanding how that feature is supposed to work?