The exporting of packages set me off on another trail.
I have done a bit more rooting around since the last post. I installed the service pack creator which produces a nice parse-able export list.
installed kacst-fonts-common;2.0-7.fc13;noarch;installed Common files for kacst-fonts
installed filesystem;2.4.31-1.fc13;i686;installed The basic directory layout for a Linux system
installed telepathy-filesystem;0.0.2-1.fc12;noarch;installed Telepathy filesystem layout
installed xml-common;0.6.3-32.fc13;noarch;installed Common XML catalog and DTD files
installed hal-filesystem;0.5.14-3.fc13;i686;installed Filesystem layout for HAL
installed mozilla-filesystem;1.9-5.fc12;i686;installed Mozilla filesytem layout
installed ca-certificates;2010-2.fc13;noarch;installed The Mozilla CA root certificate bundle
installed dmz-cursor-themes;0.4-3.fc13;noarch;installed X cursors themes
I could not find any reference on how you would use this to recall packages. I'm now leaning towards possibly doing a ruby script to launch yum with the list. This would probably mean installing one package at a time.
I too have a laptop plus one other desktop. Preupdate is attractive and my boot configuration is about as standard as it gets, F13 to F14 in principal should be straight forward. The thing that put me off was a comment at Fedora's upgrade page that upgrading this way was not really tested .
Any further insights would be much appreciated.