All, It all started with the great idea of a customer of reserving the same SMSGuid for an Inplace upgrade / Refresh scenario that would : - Keep the same hardware - Do an USMT capture of the settings for that machine. - Replace the OS from W2K to XP SP2 or from XP SP2 to XP SP2 - Rename the computer account to the new standard from GTxxxxx to TGNxxxxx - Maintain the same SMS Guid , so no duplicate entry's - Restore the USMT state to the local machine . What a challenge , but we had a kind of...(read more)

Read the complete post at http://scug.be/blogs/sccm/archive/2008/10/27/sccm-in-place-upgrade-refresh-scenario-issues-solutions-with-tranguid-exe-part-1.aspx