Question regarding upgrading packages from a new developer

[James Antill]

On Tue, 2010-10-12 at 14:23 -0400, Eric Hudish wrote:
[...]
> Here's where I'm confused. 
[...]
> Second: I would think the originating package would be uninstalled
> before the new package or update. Why would it be done after?

 So that if something fails you either have the old version, or the new,
or both. If you did the uninstall first you might end up with nothing.

> So how can I manage this properly? Can anyone provide further reading or
> documentation on this topic?

 Read: http://fedoraproject.org/wiki/Packaging/ScriptletSnippets