Sync BuddyPress Member Type to Another Blog on a Multisite Network

sync_member_type.php

<?php
function sync_member_type( $user_id = 0 ) {

	if ( empty( $user_id ) ) 
		$user_id = get_current_user_id();
	
	$memb_types = bp_get_member_type( $user_id, false );

	switch_to_blog( 3 );

	$count == 0;

	foreach( $memb_types as $key => $type_name ) { 

		$count++;

		if ( $count == 1 ) {
			// Set the user's member type
			bp_set_member_type( $user_id, $type_name );
		} elseif ( $count > 1 ) {
			bp_set_member_type( $user_id, $type_name, true ); // Append additional member types
		}

	}

	restore_current_blog();
}
?>