You don't need to switch them on, its because Node import for Drupal 6 has no support for CCK yet, see http://drupal.org/node/207738 for progress and some alternatives.
Hans www.koba.be
2009/1/9 Marc Morris marc@cultmovieforums.com
I seem to have "almost" got the node_import" module working, simply by reducing the number of data entries to import from 5,500 to 500 at a time.
However, the CCK fields I created are not being listed in the field import options - only the standard CCK fields etc.
Is there somewhere I need to effectively "switch" these on?
node_import: http://drupal.org/project/node_import
Regards,
Marc