Over the years I did send to friends links to my wikindx (3.8) about some interesting books. Difficult to write to all these people about new URLs.
The following as index.php in the location where 3.8 was does the trick for me. (This works only for requesting a resource. While I write the post, I realise that I had sent links to keywords also. Needs improvement.)

I post it here in case it could help others.

<?php
header("Status: 301 Moved Permanently");
$newquery = str_replace ( 'resourceView' , 'resource_RESOURCEVIEW_CORE' , $_SERVER['QUERY_STRING'] );
header("Location:http://www.d-meeus.be/wikindx4/index.php?$newquery");
exit;
?>