An output CSV file has only one row as not expected

Question

When I executed the Write CSV file operation, the output data had only one row, which is expected to have multiple rows.
What could be the possibble cause of this?

Answer

Please check "Append" in [Write settings] to write multiple row data.
If "Append" is disabled, the data will be kept overwriten in the first row.
Therefore, make sure to select "Append" enabled when writing multiple row data.