Would be nice to know this, but we've adopted a work around (so please don't break a leg replying). We're pre-cleansing data for now, and detected an error dialog box and aborting if an error occurs.
Frankly for the users that a better protocol. Stop, Fix Data, Start again.
But if someone does know the answer, that would be interesting. I was getting into ME, but if this is a limitation, then it'd be much less useful to me (or my other clients).
Thanks, Peter