> How is it possible that after calling 'Transaction.CommitRetaining'
> the value of 'Transaction.InTransaction' is False, while the same
> value was True right before
> calling 'Transaction.CommitRetaining' ???? (A explicit call to
> StartTransaction has been made before all this)

Retaining means it retains the cursors, not the explicit transaction.

If you want the explicit transaction preserved call the transaction's
PostAll method and then call SavePoint.

Regards,
Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com