What happens to single instance and recurring appts that were booked with DST 2007 when you run the Exchange tool V2?

Q: What happens to single instance and recurring appts that were booked with DST 2007 when you run the Exchange tool V2?
A: Recurring appointments will be OK. For single-instance ... if the appointment was created AFTER the OS update was applied, and then the rebasing tool is run against it, it will break the appointment. If the tool cannot find TZ information, it assumes that the appointment was created using the 2006 rules, so it moves it and stamps the 2007 TZ info on it.