[Zope] ZDConfera issue

I have objects written in ZOPE 2.3.3 with ZDConfera. I am upgrading to ZOPE 2.5.1 and ZDConfera won't work. 1. Is there a fix for ZDConfera to be able to use my old ZDConfera object in ZOPE 2.5.1 2. If no fix for ZDConfera, how can port my old ZDConfera