For CD-One 4th Edition, you can use the 5th Ed CDs for doing both an upgrade as well as a clean install depending upon whether you want to preserve any old data or not. In any case be aware of CSCdx87041
What if I am at CD-One 5th Edition already with my LMS 1.2 installation (May 2002 update)?
Thanks for the heads-up on the bug CSCdx87041.
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