filter_events_import.php

<?php


function tribe_filter_import_data_before( $post ) {
	if ( $post['post_type'] == TribeEvents::POSTTYPE && !empty($post['post_parent']) ) {
		$start_date = '';
		if ( isset($post['postmeta']) && is_array($post['postmeta']) ) {
			foreach ( $post['postmeta'] as $meta ) {
				if ( $meta['key'] == '_EventStartDate' ) {
					$start_date = $meta['value'];
					break;
				}
			}
		}
		if ( !empty($start_date) ) {
			$post['post_title'] .= '[tribe_start_date]'.$start_date.'[/tribe_start_date]';
		}
	}
	return $post;
}
add_filter( 'wp_import_post_data_raw', 'tribe_filter_import_data_before', 10, 1 );

function tribe_filter_import_data_after( $post ) {
	if ( $post['post_type'] == TribeEvents::POSTTYPE ) {
		$post['post_title'] = preg_replace('#\[tribe_start_date\].*?\[\/tribe_start_date\]#', '', $post['post_title']);
	}
	return $post;
}
add_filter( 'wp_import_post_data_processed', 'tribe_filter_import_data_after', 10, 1 );