ZContact ChangedDate

[3rtDeveloper]

contact.getMetaDataChangedDate();
.
System.out.print(contact.toString());
Result:
.
.
metaDataChangedDate: 0 /* Wed Dec 31 18:00:00 CST 1969 */,
.
.

When I access the ChangeDate for a contact I always get 0. Is there another way I should be accessing this date or is the date not being set? I am using Zmailbox.createContact() and Zmailbox.modifyContact() for creation and modification of the contacts.

[3rtDeveloper]

Any idea as to why getMetaDataChangedDate() for a ZContact would always return the value 0? Also, is there another way to access the modification date for a specific contact?