How to make Additional Info fields visible for CSV import tool.

How to make Additional Info fields visible for CSV import tool.

Hi,

I have added various Additional Info fields (eg Email, Contact Tel - both configured as text fields) to my Event Manager posts, using the Field Editor - no problem. These works fine when adding a single new post manually.

I am also using WP All Import to import multiple posts to my clients website. All Import picks up the Post Description fields fine, but only picks up the slugs for the Additional Info types eg _email_address and not email_address. This means I can't map the fields on the import CSV. 

I had a similar issue on another post type, but resolved that by editing the template eg:
 <?php if(get_field('website')) : ?>
                                        <span><i class="fa fa-globe"></i> <a href="http://<?php the_field('website'); ?>"><?php the_field('website'); ?></a></span>
                                    <?php endif; ?>

I can't work out how to do this on the WP Event Manager template, as the code seems to relate to how the Field editor works.

Any clues/ suggestions on how to make these Additional info fields visible?

Thx, Paul