If you have custom configuration information in the TdgssUserConfigFile.xml file, make a copy of the file before uninstalling the software. After installing the new version, copy the configuration file to the appropriate location and execute run_tdgssconfig to initialize the custom configuration. See Initializing Custom Configuration Settings for Teradata GSS Client.
For information on accessing and making changes to the TdgssUserConfigFile.xml file, refer to Security Administration (B035-1100).