If you deconfigure your current library, you will lose your list of assigned media. Yes, the media will be recatorgized when you insert the media, but I think you lose the indexes so Commvault doesn't think the media exists...(i'm sure someone else can answer this better).
The reason I started this topic was the warning in the instructions:
- The new library should have the same drive type
I took the 'drive type' to mean the LTO factor and if I was changing the drive type from LTO3 to LTO5. Obviously, this wasn't what they meant since the install went fine without any issues.