Hello, In trying to fix http://drupal.org/node/191197#comment-705056 (allow to import nodes in batch), I feel a bit sorry for the status of the various import export solutions in Drupal. - importexportapi is somewhat dead - node import only accepts to import everything at once, and does not provide duplicate checking - feed parser api and feed mapper seems to be a brighter future, but do not allow everything node import / importexportapi does So I'm wondering where to put my efforts. I'm trying to import 20.000 contacts as cck nodes, and allow user to reimport the same contacts and update the existing nodes, all with a nice import/export interface. I think the first step would be to have standardized import / export format for a Drupal node, maybe xml based (I think there is a xml format for books only), with support for cck, taxonomy, and all. This is a very complex problem, but I think it's important for Drupal, as an open platform, to provide excellent import/export tools. Which module has the greatest chance to provide a solid base? Is there a standard node xml (or some other format) representation? I'd like to spend time on a somewhat future proof solution. Any help would be greatly appreciated Philippe