Hi Tony,
This seems to work fine for me. Have you perhaps used a snapshot for the ingest? Those snapshots do include the local IPTC stationary pad content and if you haven't rebuild your ingest snapshot with the new info, that would explain the fact you keep getting the old info.
Simply open the ingest dialogue, open its IPTC stationary, change the address data there and save the ingest snapshot again.
Hope this helps,
Hayo