[fix] remove bug introduced for per-item logging. a child logger must explicitly be used.

        chain, pairwise(processing_paths), processing_paths_meta[:-1]

    ):

        # setup logging for the output

        item_logger = logger.getChild(output.stem)

        fh = logging.FileHandler(output.with_suffix(".log"), mode="w")

        fh.setLevel(logging.DEBUG)

        fh.setFormatter(logging.Formatter(LOGGER_FORMAT, datefmt=LOGGER_DATEFMT))

        logger.addHandler(fh)

        item_logger.addHandler(fh)

        p.process(input, output, input_meta, logger)

        p.process(input, output, input_meta, item_logger)

    # copy output and metadata from final process to output file

    if not chain[-1].name == "processing_splitting_scaling":