SQL 2008 Enterprise Eval to Standard still shows expiration date

All,

We installed SQL 2008 R2 Enterprise Eval while we waited on getting licensing in place.  Once we had the license we did a maintenance upgrade from Eval to Standard and entered the key at that point.

Now the edition everywhere shows as standard but if we run

SELECT<o:p></o:p>

create_dateAS'SQL Server Install Date',<o:p></o:p>

DATEADD(DD, 180,create_date)AS'SQL Server Expiry Date'<o:p></o:p>

FROMsys.server_principals<o:p></o:p>

WHEREname= 'NT AUTHORITY\SYSTEM'<o:p></o:p>

It still shows an eval expiration date.

Is this just an artifact of the trial, or do I need to be concerned?