[ZODB-Dev] NotImplementedError when attempting to undo transactions

[Chris Withers]

This is a little disconcerting:

Failed to abort object: TransactionalUndo oid=<object object at 0xb7d01470>
Traceback (most recent call last):
   File "/opt/Zope-2.11/lib/python/transaction/_transaction.py", line 
549, in abort
     self.manager.abort(o, txn)
   File "/opt/Zope-2.11/lib/python/ZODB/DB.py", line 809, in abort
     raise NotImplementedError
NotImplementedError

I was just trying to undo some transactions in the ZMI undo tab.
What's not been implemented exactly?!

Chris

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