<?php
/** create include only list to narrow available choices of user meta to sync
** in UPT. You still have to check and save them in the UPT admin page,
** this just changes options available to select
**/
add_filter( 'upt_user_choices', function( $choices ) {
// array of custom user meta fields to display in dropdown list
$include = [ 'billing_address_2', 'billing_address_1'];
foreach ( $choices AS $key => $value ) {
if ( 0 === strpos( $key, 'meta-') & ! in_array( $value, $include) ) {
unset( $choices[ $key ] );
}
}
return $choices;
});