Can we change Compensation Letter File Names?

Hello,

We recently changed our compensation letter templates to use KNOWN_AS instead of FIRST_NAME within the letter so as to refer to our employee by their preferred name.

However, when I preview the letter (from Administer Workers on an individual employee who has a First Name (Johnathan) and a Known As name (John)), the file downloads as "Smith_Johnathan_###…pdf". Is there a way to change that?