Why is the date in SaveDate different from the Modified date?

[Manolo]

According to MS:

{SaveDate}

Inserts the date and time a document was last saved, using information
("Modified") on the Statistics tab in the Properties dialog box (File menu).

However, in every document i have inserted this field, it does not match the
dat in the "Modified" property.

Any explanations?

 

[Suzanne S. Barnhill]

SaveDate is never accurate till updated, and it doesn't update
automatically.