Why all columns are not written correctly to CSV even if I connect the [row] nodes of input and output in the Mapper editor?

Question

I am creating a process to convert data read in the Read CSV File operation with Mapping and write it to another file in the Write CSV File operation, but not all the columns of the read data were being written correctly.
In the Mapper editor,  I connect both InputData and OutputData [row] nodes each other with Iterate specified node logic, and the columns to be converted with conversion logics.

Is there any mistake in my setting?

Answer

In the Mapper editor, you need to connect all input and output data nodes to export, even for columns you want to output as without conversion.

In this case, connect all other nodes as well since you want to export all columns.