Use these commands to recall CSV/TSV file import window. After selecting a file to import you will be prompted for assigning file columns to program data fields. Move fields on the right (fields in the file) up and down so they reflect column names on the left (note that changes are applied to ALL records, not currently displayed one). Move all unsupported fields down the list or clear the checkbox next to the field. Checkbox "Import first record" may be used to instruct program to import (or not) a very first record found in the file (in most cases this will be "label record" that doesn't contain actual data but rather column titles). Use "Next record" and "Prev record" buttons to navigate between next and previous records in file.
Click "OK" to import records from that file.