<?php add_action( 'admin_init', 'duplicate_post_jetpack_init' ); function duplicate_post_jetpack_init() { add_filter('duplicate_post_blacklist_filter', 'duplicate_post_jetpack_add_to_blacklist', 10, 1 ); if (class_exists('WPCom_Markdown')){ add_action('duplicate_post_pre_copy', 'duplicate_post_jetpack_disable_markdown', 10); add_action('duplicate_post_post_copy', 'duplicate_post_jetpack_enable_markdown', 10); } } function duplicate_post_jetpack_add_to_blacklist($meta_blacklist) { $meta_blacklist[] = '_wpas*'; //Jetpack Publicize $meta_blacklist[] = '_publicize*'; //Jetpack Publicize $meta_blacklist[] = '_jetpack*'; //Jetpack Subscriptions etc. return $meta_blacklist; } // Markdown function duplicate_post_jetpack_disable_markdown(){ WPCom_Markdown::get_instance()->unload_markdown_for_posts(); } function duplicate_post_jetpack_enable_markdown(){ WPCom_Markdown::get_instance()->load_markdown_for_posts(); }