Upload users admin tool incorrectly updates authentication method for existing users when not included in CSV

Create test users using the following CSV file content via 'Site administration' > 'Users' > 'Upload users' - username,firstname,lastname,email,auth test.account1,Test,Account1,test1@example.com,nologin test.account2,Test,Account2,test2@example.com,nologin Update the same users using the following CSV file content via 'Site administration' > 'Users' > 'Upload users' - username,firstname,lastname,email test.account1,Test,Account1,test1@example.com test.account2,Test,Account2,test2@example.com Change the following options: Upload type: Add new and update existing users Existing user details: Override with file Confirm that authentication method remains nologin Perform additional smoke testing, including: Override with file and defaults No changes