Custom Terms list only Parents

I recently made up this script that automatically inserts a few terms on the WordPress database. The code does a simple loop and creates some terms and, after that, creates some children terms to them. I use this to create the the terms.

wp_insert_term( utf8_encode($bairros['BAIRRO']), 'property_location', array( 'parent' => $parent ) );

Everything goes fine, except for one thing: when I go to the WP-Admin to see how stuff are, I can only see the custom terms with hierarchy on the drop down list. The table containing all the terms doesn’t show th children, only the parents. And if I update any of the terms, everything is shown correclty.

You can see a prin screen of the problem here.

The most awkward thing is that, after update any of the terms, everything works great, as you can see here.

Any help?