In BE 2012, Add the Virtual machine name in the Backup & Restore tab if its not showing up.
Then select that VM and click on restore and then it should show the individual files and folders for restore.
If its still not showing the items for restore even after adding the server then take a backup of small file from that VM using the remote agent and then it will show you all the previously backed up data for restore.
There is an open issue with symantec for GRT via VMware....if you are using vCentre though. If accessing via ESX server its fine.
No fix has been found yet.
We only see incomplete backup - cannot do GRT restore - but backup is OK of full machine