Out with old and in with the new

Originally we had two domain controllers and both were running server 2003. The primary server/Operations Master died and my question is are there any known issue with replacing this server with a Server 2008 r2 instead of going back with the same OS as the secondary. Also, are there any issues with one server running server 2003 and the other running server 2008 r2.
jackelly01Asked:
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DMTechGrooupCommented:
No you can run both servers the AD/Forest would be in 2003 comparability mode.

You would idealy want to force the current 2003 server into the FMSO roles and Global Catalog then remove the old DC and then create a new DC with 2008.  Once it all settles down transfer the FSMO and GC to the new server.

http://support.microsoft.com/kb/255504

http://www.techrepublic.com/article/step-by-step-learn-how-to-transfer-and-seize-fsmo-roles-in-active-directory/
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jackelly01Author Commented:
It wasn't until the next day did I receive a response on this question. By that time period, I had created a case with Microsoft tech support and I was able to get the issue resolved. However, I did looked over the answer and I found that it was incomplete. So I don't know how you want me to respond other than the issue has been resolved and you can close the case. Thank you
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DMTechGrooupCommented:
You post what you did to resolve the issue.  Then accept your answer as the solution.  In the future if you decide not to wait for responses ask for your message to be deleted so that people are wasting time trying to help you.  Thanks.
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