Migrating IIS 6 to IIS 8

1. I have a Windows Server 2003 machine with IIS 6 which currently holds everything. I need to migrate everything to a Windows Server 2012 machine with IIS 8. Will using the same set of instructions as migrating to IIS 7 work? Such as the instructions from this site..

http://technet.microsoft.com/en-us/library/ff633422%28v=ws.10%29.aspx

2. My second question. Will using the Web Deploy utility remove everything that is on the old server or will everything be on the old server as well as the new server once I use this utility and migrate everything?

Thanks for the help.