I’m not sure I understood. If you want to show a link in the POI list directly to the underlying post then you can modify the poi list template. Use the function get_title_link().
Replace this:
<?php echo $poi->get_open_link(); ?>
With:
<?php echo $poi->get_title_link(); ?>
If you need to manipulate the link then you can use the WordPress get_permalink() function instead:
http://codex.wordpress.org/Function_Reference/get_permalink