Taxonomy admin boxes defaulting to autocomplete box not checklist

My custom post types were set to hierarchical but I wasn’t getting checkboxes. Am I missing something? I don’t see any other place within the admin UI to set a hierarchical attribute on any object.

Cheers,
Paul

Here are some screenshots that illustrate my situation. The problem occurs with all of the post type relationships I’ve created, but here I’ll illustrate with Merchants assigned as a taxonomy in the Artisans post:

• The CPT-onomies main screen showing the custom post type relationships.
• The CPT-onomies detail screen showing that Merchants are assigned to the Artisan post type.
• The Merchant post type editor showing that ‘hierarchical’ is selected.
• The Artisan post editor showing that Merchants (and Products) appear as autocomplete, not checklist.

When I add filter code to my functions script returning ‘checklist’ when the post type name is one of my CPTs, the problem with the checklist goes away:

add_filter( 'custom_post_type_onomies_meta_box_format', 'artsquest_custom_post_type_onomies_meta_box_format', 1, 3 );

function artsquest_custom_post_type_onomies_meta_box_format( $format, $taxonomy, $post_type )
{
	switch ($post_type)
	{
		case 'aq_merchant':
		case 'aq_artisan':
		case 'tcp_product':
		case 'aq_curator':
			$format = 'checklist';
		break;
	}

	// WordPress filters must always return a value
	return $format;
}

Let me know if you need to see more.

Thanks,
Paul