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=germ/F=Ida@Maria@Immaculata@Bertha@Helena@Josepha@Huberta/N=v.Plettenberg
Ida Maria Immaculata Bertha Helena Josepha Huberta v.Plettenberg
alternatively: /cgi-bin/llmult/LANG=germ/P=60003782
Ida Maria Immaculata Bertha Helena Josepha Huberta v.Plettenberg