Yikes. That's a tough one. Since the portals are all blended into the same tables in the DNN database (ie, there is a PortalID column in many of the tables--this is what distinguishes one portal from another), I doubt it would be easy to update a single portal, without affecting the others. It would be very complex code, since in many cases, it's not just the tables w/PortalID in them that you would have to update. There are also modules, that are not stored explicitly by portalID, but make use of foreign keys that *do* link specific modules to portals.

You might check out Snowcovered.com for a product that allows you to do this. I seem to remember that one was available to accomplish something like this. Unfortunately, in the last year, Snowcovered 'enhanced' their search, to the point where you really can't find anything...at least I can't. But it you search for 'portal manager or portal users or something like that, or heck, just call them and ask! That would prolly be faster.

Good luck. I'd love to hear how you work this out. It's definitely an issue that begs for a DNN module to manage portal upgrades.

The backup and restore method will work, but it will overwrite all portals at once. - I have noticed that some people use: http://www.red-gate.com/index.htm
http://www.red-gate.com/products/SQ.../video.htm

There is some software for synchronising your SQL databases, but it does cost and I'm not sure if you will be able to specify the data to synchronise.

Thanks,