On Feb 22, 2007, at 4:07 PM, David K. Hess wrote:

> Digging up an old thread about data migration between two durus
> instances, what if your structure does have references to other
> Persistent objects? Is there a reasonably simple process that
> preserves the references?

The pickling method described does a deep copy.
It works fine to copy objects with references: every
referenced object will be included in the pickle and
copied.

The only problem is if the graph of objects includes
things that you *don't* want to copy.