Note that the index numbers are only technical numbers which have no persistence. After a new system generation is done, all of them are invalid. To generate a persistent link, use the name.Use the URL:
http://ww-person.com/cgi-bin/l3/LANG=engl/F=Alfons@Florenz@Ludwig@Amor/N=v.Looz-Corswarem@u.@Merdorp
Alfons Florenz Ludwig Amor v.Looz-Corswarem u. Merdorp
alternatively: /cgi-bin/llmult/LANG=germ/P=56004710