I added this code on my child theme’s function.php
function my_swt_post_type_filter( $hotels ) {
$hotels['hotel'] = true;
return $hotels;
}
add_filter( 'sitewide_tags_allowed_post_types', 'my_swt_post_type_filter' );
It causes a white screen but it does transfer the custom post type to the main blog. Anyone who could help?