Comment # 4 on bug 1219345 from Fabian Vogt

(In reply to Michael Andres from comment #3)
> No, a re-install is not 'remove and install'. 
> It's an `update` to the same version (rpm -U --replacepkgs).

Well, yes, I'm already a step ahead there. Main point is that after the update,
the package is replaced, i.e. only one of either the old or new packages will
be installed. So file conflicts can't happen. Otherwise no package update could
ever be installed.

I guess there is some conflict with the multiversion functionality.