Oh, I see! I'm reading the MSDN documentation on this right now, and it turns out that the Locator is optional anyway (who knew?), so I think we can simplify things by leaving it out. Also, it looks like since you just want to replace one attribute, we probably want to use the appropriate declaration, rather than trying to replace the entire object.
So, I think we could try something like this:
<objectServer
xdt:Transform="SetAttributes(remoteBaseUrl)">
/>
</ideablade.configuration>
</configuration>
That way, we should be specifying that we want to transform the remoteBaseUrl property of ideablade.configuration.objectserver, and leaving everything else as it is.
Edit: Testing, and this doesn't work as expected. I'm mucking with it now and will post when it does work.
Edited by robertg - 07-Jul-2011 at 12:35pm