Windows Service Account Issue When Restoring Master To Another Server

I noticed when I restore a master database to a server other then the one which created the backup of master, SQL Server contains the following three local security groups that were defined on the source server. The problem is these groups are "local" and do not apply to the server where master was restored.

ServerNameSQLServer2005MSFTEUser$ServerName$InstanceName
ServerNameSQLServer2005MSSQLUser$ServerName$InstanceName
ServerNameSQLServer2005SQLAgentUser$ServerName$InstanceName

For example, if you have a default SQL Server instance named MARKETING_TEST the security folder will contain the following three entries.

MARKETING_TESTSQLServer2005MSFTEUser$MARKETING_TEST$MSSQLSERVER
MARKETING_TESTSQLServer2005MSSQLUser$MARKETING_TEST$MSSQLSERVER
MARKETING_TESTSQLServer2005SQLAgentUser$MARKETING_TEST$MSSQLSERVER

If you then backup the master database on an instance named MARKETING_PROD and restore it to MARKETING_TEST, the security folder on MARKETING _TEST will now contain the following three entries.

MARKETING_PRODSQLServer2005MSFTEUser$MARKETING_PROD$MSSQLSERVER
MARKETING_PRODSQLServer2005MSSQLUser$MARKETING_PROD$MSSQLSERVER
MARKETING_PRODSQLServer2005SQLAgentUser$MARKETING_PROD$MSSQLSERVER


These entries would be invalid because no such server exists and therefor no such local groups exists. There appears to be no Microsoft documentation explaining how to handle these groups when restoring master from one server to another. My assumption is that whenever restoring master to another server you must drop these three groups and add the correct corresponding groups along with the appropriate permissions. I don't understand why SQL Server would not rebuild this information for you during a restore.

Any explanations?

Dave