When the server writes out the audit entry for a property change, it contains only the data related to that event: the time, the user, the entry identifiers (name, path, id), the old field value and the new field value.  It does not include information about fields that did not change.  Using the audit log to reconstruct the point-in-time field values assigned to an entry could require processing the entire audit log from the time when the entry was created.  It's not impossible if you really need to do it, but hopefully there's an easier alternative.

What is the problem you are trying to solve?