Don't even reference DTSTART.
The values for RECURRANCE-ID in any future reschedule/update or counter must be the dates rolled from the chairs Original meeting invitation RRULE/RDATE/EXRULE/EXDATE.
Yes, and I assume by 'original' you mean currently booked version of the object, as the 'original' may be of date (updated already).
Doug Royer | http://INET-Consulting.com
-------------------------------|-----------------------------
Doug@xxxxxxxxx | Office: (208)612-INET
http://Royer.com/People/Doug | Fax: (866)594-8574
| Cell: (208)520-4044Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature