Avamar: How to remove an individual file from a backup

Scenario & Question:
A backup made to Avamar contains a one or more files which are sensitive or which consume a lot of space.  
Is it possible to remove those files without removing the backup?

Response:
At present, there is no way for a user to remove individual files from a backup.
The only way to remove such files is to delete all the previous backups which contain that file.

The components which make up a file in a deleted backup exist until:

1. All Avamar checkpoints which contain that backup have been cleared from the system.  
2. Garbage collection has cleared up the data.  
3. Similar activities have taken place on any pairs which the backup has been replicated to

Files and backups are stored as composites within the Avamar Hash File System. This is implemented in a merkel tree arrangement.
Every composite has an associated hash (fingerprint).
A backup composite is composed of references to lower-level components such as file systems and files.

Removing a lower level component, such as a file, alters the hash value of every composite component above it.  

There is no supported method for this to be performed by users.