We have an issue with the SLA flags.  Red means the request is Overdue and yellow means it will be overdue soon, perhaps in hours or in a few days.  However, as the attachment shows, a request can be 28 days away from violation and they are shown as yellow.  It is true that for this particular request the due date was reset at least once in the past.  I suspect the yellow flag is referring to some older due date and not the current one.  Can you confirm?