Existing Alias in Max

I have an Agilent 34401A that is USB.  I assigned it an alias in MAX.  When we swapped instrument for calibration, max found the new USB address.  But when I go to add the alias in MAX I get an error saying "Alias exist" and MAX will not save the configuration.

I can't find where the existing alias is to delete it.  How do I delete it?  I have attached the MAX report.

Paul