Migrating Sermons from Ezekiel to Theme Bundle

<?php
//Paste this function into your theme's functions.php file to create a duplicate ctc_sermon for each old sermon
function mp_migrate_ezekiel_sermons(){
	
    if ( !isset( $_GET['duplicate_sermons'] ) ){
		return;
	}
    
    //Set the args for the new query
    $cpt_sermons = array(
        'post_type' => "cpt_sermons",
        'posts_per_page' => -1,
        'order' => 'ASC',
    );	
        
    //Create new query for stacks
    $cpt_sermons_query = new WP_Query( $cpt_sermons );
    
    //Loop through the stack group		
    if ( $cpt_sermons_query->have_posts() ) { 
        
        while( $cpt_sermons_query->have_posts() ) : $cpt_sermons_query->the_post(); 
            
            $post_id = get_the_ID();
            $post_itself = get_post( $post_id );
            
            //For our new post, change the Post Type to ctc_sermon
            $post_itself->post_type = 'ctc_sermon';
            
            //remove the ID so that it creates a new one
            unset( $post_itself->ID );
            
            //Create a Duplicate of this post as a ctc_sermon
            $new_ctc_sermon_post = wp_insert_post( $post_itself, true );
            
            //OLD Sermon Video
            $sermonvideo = get_post_meta( $post_id, 'sermonvideo', true );
            
            //Set the Video file in the new one
            update_post_meta( $new_ctc_sermon_post, '_ctc_sermon_video', $sermonvideo );
                
            //Get the audio file from the old post
            $audio_value = get_post_meta( $post_id, 'sermonmp3', true );
            
            //Set the audio file in the new one
            update_post_meta( $new_ctc_sermon_post, '_ctc_sermon_audio', $audio_value );
            
            //Get the sermon author
            $sermonauthors = array();
            $sermonauthors[] = get_post_meta( $post_id, 'sermonauthor', true );
            
            //Get any Sermon Speakers
            $term_taxonomy_ids = wp_set_object_terms( $new_ctc_sermon_post, $sermonauthors, 'ctc_sermon_speaker' ); 
            if ( is_wp_error( $term_taxonomy_ids ) ) {
            
                print_r( $term_taxonomy_ids );
                die();
                
            }
            
            //Set the thumbnail
            $post_thumbnail_id = get_post_thumbnail_id( $post_id );
            update_post_meta( $new_ctc_sermon_post, '_thumbnail_id', $post_thumbnail_id );
            
        endwhile;
        
    }
}
add_action( 'admin_init', 'mp_migrate_ezekiel_sermons' );