Documents appear unpublished after Zope export/import

Dear developers

I have upgraded a site to Silva 1.0.2, exported it and reimported it on a
Zope 2.7.2/Silva 1.1 instance.
Now I find all the Silva Documents in unpublished state. This poses a
serious problem because now I can't differentiate between Documentes
formerly published and unpublished respectively.

Is there a way to do the export/import procedure without losing the
information about the Document's workflow state?
(BTW: Closes Documents remain closed.)

Regards,
Benno Luthiger

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Benno Luthiger
WEP J 11
Swiss Federal Institute of Technology Zurich
CH-8092 Zurich

Tel: +41 1 632 57 65
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