You have to find the newly added recurring series and delete it.

VBA doesn't use the Interop, it's unmanaged code.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"Mueller-Lynch Thomas" wrote
in message ...
If someone adds the birthday date to a contact via Outlook, Outlook
creates a
calendar series which doesn't get changed or doubled if you change
anything
at the contact (how it should be).

If you do the same via VBA via the
Microsoft.Office.Interop.Outlook.Application Namespace every
"myItem.Save()"
of an contact item results in a new calendar series.

Any ideas why and how to prevent this behavior?
Thanks Thomas