Why is the attribute 'pwdLastSet' not changed in Active Directory when a user is restored? (4353320)

When a user object and password is restored into Active Directory using Active Administrator, the attribute 'pwdLastSet' continues to show the most current date that the password was last updated.

For instance: a deleted User object and password are restored from a backup made 90 days ago.  However, when the attributes of the User object are opened in ADSI Edit, or Advanced View in Active Directory Users and Computers, the attribute that tracks when the password was last changed still shows the password as being rest in the last few days.