Import another xwiki

Hi All, I've currently got two xwiki systems running side-by-side - what I'd really like to do is to import the data from one (documents/attachments/users/topics) and merge them with the other, so that I only need to maintain one wiki installation. Two complications are present if this is doable: 1) Some users may be duplicate on the other xwiki - including admin. Passwords are the same between the systems wherever they are duplicate. 2) Document names may be duplicate. Is there an easy way around this, or should I rather forget about it? It would be really ideal if xwiki documents could be exported to xml for example, and imported as such - but I don't think such a tool exists yet? Brandon Esbach Software Engineer M/A-Com Eurotec Operations LoughMahon Technology Park, Skehard Road, Blackrock, Cork, Ireland Tel +353 21 4808305