My organization runs a site for about 5 years on the Drupal 6 version. I've made a complete new site in Drupal 7, and I want to add some content from the old site to the new one. In the Drupal 6 website there is a content type called 'items' which contains the default fields (title, body, date creation, ..) and a lot of other specific fields. However, it is only necessary to transfer the title, body and creation date fields. All the other fields can be ignored.