How do I stop ignoring an alert?

[John Griffiths]

I have marked some recurring alerts as "ignore" in sealert browser. There have
been some recent policy updates and I want to now receive alerts for those alerts to see
if they were fixed in the update. 

I have read the man pages for sealert and setroubleshootd and cannot find any reference to
a command or an edit to be able to stop ignoring an alert. 

Is there such a command? Do I have to edit a file? If so, which one?

Thanks,
John