>
> looking through CHANGES I can see mentions of several issues regarding
> flushing, merging, and composite primary keys, though none seem quite to
> match this particular symptom.  in any case 0.5.2 is an old release so I
> would ask that you confirm this behavior on 0.5.7.
>
>
> > Third question: I extrapolate that merge() expects *all* fields are
> > populated?  In other words, if merge() encounters a field whose value
> > is None, will it update that field to null in the database (as opposed
> > to leaving the value untouched in the database)?  Does None mean
> > "leave it alone" or "update to null"?
>

Yes, fair enough.  In the meantime, do you know the answer to my
"Third question"?
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