-NO mexport option
The -NO option can be used with the mexport utility command.
The no output (-NO) option of the mexport utility command is used to indicate that an existing exported xml file (.xml) is not to be overwritten. If the no overwrite (-NO) option is specified in the command line of mexport, if the file with the name of the map source file resulting from the exporting process exists, it will not be overwritten, the map exporting process will fail, and the Map Export error - The exported xml file cannot be overwritten, file already exists message will be written to the mexport log file, if enabled. If the (-NO) option is not specified, the log file with the name of the map resulting from the exporting process will be overwritten.