Indexing preexisting hierarchical taxonomy

Also told about that in the node auto term module: http://drupal.org/node/707482

It may happen that preexisting hierarchical taxonomies are poorly indexed, meaning not taking the hierarchy into account.

To correct the problem for each badly indexed taxonomy, visit the page

admin/content/taxonomy/*

with the right taxonomy number in the url.

clean the cache in performance and reconstruct facet index. Now everything should be fine !

I first thought it was because of nat module, but they seems to work well together.