Currently, when creating an Attribute in PI AF using "String Builder" or "None" Data References, the system does not update the timestamp associated with the attribute's value upon value change. When the end-user looks at the timestamp they see a static value: "1/1/1970 00:00:00" which is not representing the last time when the value has changed and thus very confusing. I believe that every value change should have a timestamp associated with it regardless of the Attribute type.
