I have an odd permission issue with an Exchange user...I had to do the below to resolve a task view issue.
1) I had exported the user's data to a pst file via mailbox-exportrequest in Exchange Shell.
2) disabled the mailbox and removed the exchange data
3) recreated an emtpy mailbox and used exchange shell importrequest to restore the data from pst file
Now, I have a weird issue where the user can't cancel previously created meetings/items even though he's the owner of the mailbox...If I add delegates with full permission access, they can't delete stating the permissions are set for behalf of user.
I'm 99% sure it's an issue with mismatch AD guid mailbox of the old mailbox with the new mailbox.
Is there a way to fix?