probkup/prorest compatibility between Progress Versions

probkup/prorest compatibility between Progress Versions
Is it possible to restore a different version backup into another version?
Can I restore a lower version backup volume with a higher version PROREST command or vice-versa?
Is it possible to restore a lower version backup into a high version structure or vice-versa?
Is possible to backup / restore database between version lower and higher versions ?
Can I restore with prorest a higher version of a lower version backup?

It is not possible to restore a backup with a different database version.  

PROBKUP/PROREST is not a supported migration path to take a database from any major version to another, for example:

• OpenEdge 10 to 11
• OpenEdge 11 to 12.

To migrate OpenEdge Databases across major versions, use the PROUTIL -C conv1011 or conv1112 utility on the same supported platform or Dump and Load strategies.  Please refer to the OpenEdge Database Administration Documentation for further information on these methods.

Example of the PROUTIL conv1112 command:
If the wrong version of a backup volume version is inadvertently used, the existing database will be deleted. A current version of the backup volume will need to be used to reinstate the database:

•  Can a probkup created on one platform be restored it on a different platform?   
•  AI support between different servers  

Progress Articles:

  Restoring an OpenEdge 10 backup with OpenEdge 11 utilities.  

NOTE: prorest within the same major release should be able to restore a backup made from a prior version within the same major release. There is a possibility that an older version of prorest within a major release may not be able to restore a later backup from the same release if a significant change was made to the database internals
Example.
11.7.10 should be able to restore a backup with 11.7.2.
11.7.2 miay be able to restore a backup made with 11.7.13.