Select a Systems folder to generate the filelist.csv. Once generated, simply copy the downloaded filelist.csv back to the Systems Folder on the R36SX SD Card.
If any Games contain a comma, you can choose between creating a batch file that will automatically rename offending files, or simply skip adding files with a comma. If Batch File is selected, it will also be created and download automatically. Copy this batch file to the same Systems folder and double click it to remove the Commas from the Filenames.