When you open the "Contacts' app do the affected entries have this problem? When you click on an affected contact, using the "Contacts" app, click on the 'Edit' button (in the bottom left hand corner). Can you edit the address there?
When you open the "Contacts' app do the affected entries have this problem? When you click on an affected contact, using the "Contacts" app, click on the 'Edit' button (in the bottom left hand corner). Can you edit the address there?