> Are you re-installing the OS, or just installing a new version of 
> NW? 

Just upgrading NW.

> When you uninstall NW,
> it doesn't delete the /nsr directory, so all the history remains. 

AH. That's good to know ...

> I've never had a problem
> with uninstalling the previous version of NW and then installing the
> new version.  In July, I
> upgraded from 7.5.4 to 7.6.2 (on 64-bit Linux) by uninstalling the 
> older version and installing
> the newer version.

Sounds like exactly what I need to do.

Thanks

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