How to properly upgrade policy

[Thomas Molina]

> >>>What's the proper way to upgrade the selinux policy?
> >>>
> >>>yum and rpm leave me with .rpmnew files every single time.
> >>>      
> >>>
> >>This suggests that you installed the policy source package as well, or
> >>locally modified your policy directly.  If you install or update the
> >>policy source package (selinux-policy-strict-sources), then it should
> >>rebuild the policy files from source and load the new ones automatically
> >>as part of the %post.  Updating the policy package
> >>(selinux-policy-strict) will then leave you with .rpmnew files because
> >>it sees that the files have been locally rebuilt.

Let me nail this down for my own benefit; maybe I am dense.  If you 
install the policy source package you should refrain from also installing 
the policy package?  

So is it one or the other, but not both?