Shared Calendar outlook 2010 and Exchange 2010, prepends "Copy:" in the subject of every appointment

Hello Experts.  I am doing a new deployment for a client of SBS 2011, which is Exchange 2010 SP1 on Server 2008 R2 for those who don't know.

I've imported their mail/calendar/contacts from their previous host which was also running Exchange 2010 (although not on an SBS platform) With Outlook 2007 clients.  They have a central calendar "CompanyCal" that is shared.  When users open this calendar in Outlook 2010 they see all of the appointments prepended with "Copy:"  i.e. "Copy: golf at the links" "Copy: take out trash" "Copy: meet wife for lunch" etc.

This is unusual behavior from what they had with Outlook 2007 on Exchange 2010.  I've already checked the Default Sharing Policy and made sure that Calendar Details and Contacts are shared.  I've assigned the "Domain Users" group to "full access" for this mailbox (They also share contacts from this account).  Does anyone have some other ideas?

Thanks,
Joe
DigiSecAsked:
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MegaNuk3Commented:
If you create an appointment in the shared calendar, how quickly does "copy:" get prepended?
DigiSecAuthor Commented:
I don't have an answer to that - These are all appointments that were created before the migration (today was migration day)

Not *ALL* of the items have the "Copy:" prefix.  In my testing new Items did not show up with the Copy: prefix when viewed from any system.

I've attached a Screenshot
Calendar.png
MegaNuk3Commented:
How did you do the import? With outlook or import mailbox ?
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DigiSecAuthor Commented:
Using the Exchange Command shell New-MailboxImportRequest.....

MegaNuk3Commented:
Sort the Calendar by Modified date after doing an Advanced Find on it and you should see all the items you imported on a specific date/time, delete them and then reimPort only the Calendar again or use Outlook attached to the PST

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DigiSecAuthor Commented:
I re-ran scanPST against the mailbos and imported through outlook - overwriting duplicates.  That did it.  Thanks!
MegaNuk3Commented:
Thanks for the points
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