What function does the "overwrite missing fields" option serve during a CSV import?

The "overwrite missing fields" option during a CSV import serves the crucial function of clearing any existing data in NetSuite fields that correspond to those in the CSV file when there is no data provided for those fields in the CSV. When this option is selected, if a CSV column does not contain data for a specific record being imported, NetSuite will remove or clear the current data in that field, effectively ensuring that there are no remnants of previous values that may have been present.

This is particularly important for maintaining data integrity and ensuring that records reflect the most accurate and current information as specified in the import file. Without this option, fields that are not populated in the CSV would retain their existing values in NetSuite, which might not be desirable if those values are outdated or incorrect. Therefore, this feature helps prevent confusion and ensures that the database remains clean and up-to-date.