Don't Import Header
Don't Import Header is pre-selected for imports to skip importing of column headings.
In a spreadsheet, you should have a Header row with column names like Contact Code.
This first row of the import file then displays in the Available Fields to help with mapping.
If Fields Available does not show names, but actual data, un-check Don't Import Header. Otherwise, leave Don't Import Header checked to skip import of the first row of the import file.
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