Restore Public Folders in Exchange 2007

We installed a MS Exchange 2007 Server with Acronis Recovery for MS Exchange. While we tested the Function of Acronis, we've found the Problem, that we couldn't restore Public Folders with Contacts. The restore itself works without problems, but the Contacts in the restored public folder are empty. Acronis restores the Contact, but without any information, just a empty "box". The permissions on the restored public folder are also reseted to standard-configuration...
As much as i know it is not possible to restore a single Contact. But a whole public folder should be restoreable, isn't it?!

Thanks for Help
Zoolander

Answers in german are welcome...