function xprofile_ajax_reorder_field_groups() {

	// Check the nonce.
	check_admin_referer( 'bp_reorder_groups', '_wpnonce_reorder_groups' );

	if ( empty( $_POST['group_order'] ) ) {
		return false;
	}

	parse_str( $_POST['group_order'], $order );

	foreach ( (array) $order['group'] as $position => $field_group_id ) {
		xprofile_update_field_group_position( (int) $field_group_id, (int) $position );
	}
}