bbp_merge_topic_count( int $destination_topic_id, int $source_topic_id,  $source_topic_forum_id )

function bbp_merge_topic_count( $destination_topic_id, $source_topic_id, $source_topic_forum_id ) {

	/** Source Topic **********************************************************/

	// Forum Topic Counts
	bbp_update_forum_topic_count( $source_topic_forum_id );

	// Forum Reply Counts
	bbp_update_forum_reply_count( $source_topic_forum_id );

	/** Destination Topic *****************************************************/

	// Topic Reply Counts
	bbp_update_topic_reply_count( $destination_topic_id );

	// Topic Hidden Reply Counts
	bbp_update_topic_reply_count_hidden( $destination_topic_id );

	// Topic Members Counts
	bbp_update_topic_voice_count( $destination_topic_id );

	do_action( 'bbp_merge_topic_count', $destination_topic_id, $source_topic_id, $source_topic_forum_id );
}