09 Jan 2005
17 Jul 2012
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I couldn't find any special notes on the upgrade process other than the most general steps with the porject manager.
However, when I did a file comparison of the web.config and sitefinitywebapp.csproj in my project and the 5.1 blank project, there was a lot of new stuff... so I manually merged all the additions. Fortunately I have a fairly good tool for that, but still a time-consuming process.