[Zope] CST, non-undoing Berkeley Storage, and Versions

[Randall F. Kern]

When running Core Session Tracking with a Session Data Container in an
Externally Mounted non-undoing storage, Versions stop working.

If you join a version, you will get this error when committing a
transaction that used CST:

Error Type: Unsupported
Error Value: Versions aren't supported


Is there anyway this could be fixed?
-Randy