When upgrading to the latest release, Notes Migrator for Exchange now utilizes *.TSV files. TSV files are Tab Separated Values vs. Comma Separated Values (CSV).
Upon upgrading, all current CSV files are converted to TSV files so there will be two file names with the same file name, but different file extensions (one for CSV and one for TSV). Once the upgrade is performed, going forward, modify the TSV version of the files.
The Setup program automatically converts any .csv files that reside in the subtree where it installs the admin programs, so those files will automatically be converted to .tsv files. if there are any old .csv files that reside anywhere other than in the admin subtree, the files will need to be manual converted to the .tsv format before use. Notes Migrator for Exchange includes a csv-to-tsv conversion utility for this purpose. For more information, refer to Appendix E of the Administrator's User Guide.