Outllok: Calender appointments don't update after importet from PST

Hi.
Moved 50 users from on-premis exchange to Office365.
Used "export to PST, set up new profile, import from PST" solution on individual pc's to achive best import-to-office365 speed.
Se that all calender appointments that have been created through Invite function now have the added Copy: in front,
And don't recive updates made to the meeting.
Have found a VBA script that should be able to remove the word copy: in front, but no help if they are still not reciving updates.

Any one that have a solution to this problem. How to make the appointments "updateable"

Outlook 2010SP2

Thanx
LVL 1
Tore JacobsenSystem adminstratorAsked:
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Tore JacobsenSystem adminstratorAuthor Commented:
Update: Only way I have found to fix this is to:
1 start up old outlook profile,
2 Connect an ampty PST file, and create a calender folder.
3 MOVE all calender apointments to new PST file.
When opening this PST file the apontments don't have Copy: in front.

Now I could try to import to new profile, choose not to import duplicates.
Now I would have only duplicates of invited meetings. ! with Copy: and without.
Could then listed calender appointments and deleted all with names started with Copy:.

Long but pisible road.
Only fear is doing this would result in 100's of invites on old and new apointments were sent again.
BembiCEOCommented:
The "copy" would lead me to the fact, that you havn't moved the original items but have created a copy of the item. The copy may not be connected to the original appointment anymore (as it gets a new identifier), therefore you do not get updates anymore.
If you get an update for an appointment, Outlook needs the identifier to recognize, to which items it belongs to. A copy is a new item with a new identifier.
Tore JacobsenSystem adminstratorAuthor Commented:
Yes, we used export to PST, set up new profile and import from PST.
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BembiCEOCommented:
If you have an on premise server, you may also have the option to temporarily use a Hybrid configuration and move the complete mailboxes into the cloud. But works only with Exchange versions, which support Hybrid configuration.-  

As I understood, it worked with a separate PST file, but not with the export?
Have you had a look into the exported PST files? Do you have also "Copy" trailers in the exported file?
I'm just wondering because this was a common way in earlier times to make cross domain migrations. Fort the older Exchange servers there was a tool for migration, what did exacly the same, to create PST files and to import them into the new system.

Are you sure, you export into an empty PST file?
I just exported my calendar into a pst file, changed the name to a non existing file name and do not see any "Copy"  in the subject.

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BembiCEOCommented:
Ups sorry....
Yes you are right, just opened the wrong folder...
The Appointments with invitations have a Copy trailer....
BembiCEOCommented:
What is your version of Exchange (on premise)?
Tore JacobsenSystem adminstratorAuthor Commented:
It's 2008.
No it's to late to re-do the job. They are working on new solution now. Was hoping to be able to run a fix of some sort.. But thanx for tributing
BembiCEOCommented:
You are welcome...
If there is nothing more to add, please close the question.
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