So, I extended the Member class to include a "DisplayName" field, and I wrote a getter for the field that displays either the DisplayName provided, or it concatenates the member's FirstName and Surname and shows that if the DisplayName field is empty. This works fine in templates in such, however, when I look at the member in the CMS, the DisplayName form field is populated with this calculated value if it's empty in the database.
How can I get the field to display the actual database value in CMS forms while keeping the functionality I have? I'd prefer not to have to make another calculated field that can't be set just for this purpose.