[ZODB-Dev] Migrating classes in ZODB 3.5.1

[Lennart Regebro]

This may not help, but anyway. :)

 In Zope, I did this: I moved the class to the module I wanted it. I
also kept a "dummy class" in the old place like so:

from newplace import class

so that the old objects worked. Then I wrote a script to go through
the ZODB and recreate every object. I then could remove the dummy
import.

Kaching!