Newsgroup subject: Re: CRM3.0 to 4.0
Archived from: microsoft.public.crm
Author: John Straumann
There are 2 ways you can do this:
You can use the v3 redeployment manager to deploy the CRM v3 deployment to the new server, and then do an in-place upgrade to v4
OR
you can do the upgrade to v4 first, and then use the v4 redeployment manager to redeploy to the production server.
I have done both, and they both worked, but I would say the v4 was a bit easier. I wrote about it here:
http://mscrmguy.blogspot.com/
I would also recommend going through the process on a VPC before you attempt it on production.
JS.