Updating parents issues (adding/removing).

Hello,

Submit handler for adding or removing a parent for a term will load the term, based on $form_state values, run a query to update hierarchy table and after that it calls taxonomy_term_save($term), using the non-updated $term object.

That means we'll not have the new parents ids in the taxonomy_term_presave hook and for remove handler, the parents can't be removed, because even if db_delete will update the table, the taxonomy_term_save function will put parents back.

The key part is to replace the db_insert()/db_delete() part with populating the $term object with new parents ids.