EVPM does not archive unexpired Calendar items during the import process even though the Exchange Mailbox Policy has Archive unexpired Calendar Events set to On. Since the target is a shared archive the items will not be copied to a mailbox as there will not be an associated mailbox.
The import log file will show output similar to the following:
PST migration summary:
PST File: c:\PST\EVPM.pst
Number of folders processed: 4
Number of items archived to vault: 1 of 2
- Number of items not eligible for archiving because of PST Migration Policy setting: 1
Import the PST using the Archives > Import PST wizard in the Vault Administration Console as this issue does not occur when using this method.
This issue has been addressed as part of the following release:
Enterprise Vault 9.0.3 - Release Details
Enterprise Vault 10.0.1 - Release Details