Restore EX2013_DAG with BE2014

BE2014 restore of Exchange 2013 DAG:

-) restore folder to .pst, okay

-) restore db is okay too

-) restore of individual items, e.g. mails to original location Inbox failed with V-79-57344-959, attached the error-file

-) restore a mailbox to .pst works 

Exchange 2013 running on W2012, Backup on W2k8r2, BE2014 patched with HF218257.