Delayed Send/Receive w/ Exchange Server - First Draft of eMail in Sent Items

I have tested this on both my corporate system using Exchange and my personal system using POP/SMTP.

On my corporate/Exchange setup:

1. Set my Options -> Send/Receive -> Uncheck "Send Immediately" -> Set Send/Receive Interval to 5 minutes
2. Write an eMail -> Send
3. eMail sitting in Outbox  ** Also, email copied to Sent Items folder IMMEDIATELY!
4. Open eMail sitting in Outbox -> Edit -> Send
5. Manually or Automatically (interval) Send/Receive  ** Sent Item email not updated

Item in Sent Items folder is the first draft, NOT the edited version.

Did the same on my personal POP/SMTP system -- email not copied to Sent Items folder until the actual Send action takes place.

How can I fix the Exchange system settings to (1) keep my Send/Receive interval settings, AND (2) not have a copy in Sent Items until the final eMail actually is sent?

Thanks!