I haven’t done another upgrade at the moment but from what I’ve done before , I found the following things that worked and didn’t (please read on my other article my current MOSS 2007 environment setup).

Worked

– DLLs are all working OK.

– Few changes are needed on web.config (which are – in my opinion – minor).

– Custom site templates working OK – that’s if used for creating a new site collection.

– Features and feature receivers are all working OK – that’s if used for creating a new site collection.

Didn’t work

– Existing MOSS 2007 site couldn’t load. Please see the error message I was getting on my previous post. I think it had something to do with the database that couldn’t be upgraded.

I will now try other methods such as installing all my SP 2010 features, etc on a new farm then restoring MOSS 2007 content database into it. I want to see how that goes.

Cheers,

Tommy