How to Order Imported Items in WP All Import by Customizing Post Dates

<?php
if ( ! function_exists( 'wpcb_set_imported_item_date' ) && ! function_exists( 'wpcb_reset_imported_item_date' ) ) {
    function wpcb_set_imported_item_date( $id ) {
    	if ( $post = get_post( $id ) ) {
    		$date = get_option( 'my_custom_date_option', date( "Y-m-d H:i:s", time() ) );
    		
    		if ( $date_obj = new DateTime( $date ) ) {
    			$date_obj->modify( '-1 second' );
    			$new_date = $date_obj->format( 'Y-m-d H:i:s' );
    			update_option( 'my_custom_date_option', $new_date );
    			wp_update_post( array(
    				'ID' 			=> $id,
    				'post_date' 	=> $new_date,
    				'post_date_gmt' => get_gmt_from_date( $new_date )
    			) );
    		}
    	}
    }
    
    function wpcb_reset_imported_item_date( $import_id ) {
    	delete_option( 'my_custom_date_option' );
    }
}

add_action( 'pmxi_saved_post', 'wpcb_set_imported_item_date', 10, 1 );
add_action( 'pmxi_after_xml_import', 'wpcb_reset_imported_item_date', 10, 1 );