@lamprinaGL
While working with export and import of surveys using TSV files I found the information about the UTF-8 encoding and tried to open the CSV file (all character sets) in an spreadsheet using UTF-8. (Spreadsheet SW: LibreOffice Calc). In the pre-view window I still see some strange, non-Japanese characters but when I imported into the spreadsheet, all characters in the spreadsheet are displayed correct.
For me it was important to ignore the strange characters in the pre-view and just import the file. Maybe this could be a hint for you.
While working with export and import of surveys using TSV files I found the information about the UTF-8 encoding and tried to open the CSV file (all character sets) in an spreadsheet using UTF-8. (Spreadsheet SW: LibreOffice Calc). In the pre-view window I still see some strange, non-Japanese characters but when I imported into the spreadsheet, all characters in the spreadsheet are displayed correct.
For me it was important to ignore the strange characters in the pre-view and just import the file. Maybe this could be a hint for you.