<?php
    $args = '';
    $user_ids = custom_profile_search();
    $args = 'include=' . implode(',', $user_ids);
    $args .= '&per_page=100&max=100';

    // at this step $args looks like this 'include=1,13,14,16,17,19,20,21,22&per_page=100&max=100'

    if (bp_has_members($args)):
?>
    <?php while ( bp_members() ) : bp_the_member(); ?>
        // over here this one particular member get's doesn't show up
    <?php endwhile; ?>