documents filters to 'delete' and 'update' Custom Fields

[Programmer095]

add_filter('pmxi_custom_field_to_delete', 'wpai_pmxi_custom_field_to_delete', 10, 4);
function wpai_pmxi_custom_field_to_delete($is_field_to_delete, $pid, $post_type, $import_options, $meta_key){
return false;
}

add_filter('pmxi_custom_field_to_update', 'wpai_pmxi_custom_field_to_update', 10, 4);
function wpai_pmxi_custom_field_to_update($is_field_to_update, $pid, $post_type, $import_options, $meta_key){
return false;
}