Upgrade from 9.2 Stable to 10.0 Current

[Greg Groth]

For years I have used the stable branch, and have kept my system up to 
date using the buildworld process without issue.  During recent new 
builds, I went my usual route of installing the base system, immediately 
followed by a buildworld against the stable branch, and ran into 
numerous issues trying to get things to compile.  I finally threw in the 
towel and installed 10.0 release, and am planning on using 
freebsd-update on my new installs.

However, I still have a 9.2 install that I'd like to bring up to 10.0, 
but the 9.2 installation is using stable, and I'd like to change that to 
release.  I've never had issues with version upgrades before, but I've 
always stayed in the stable branch.  Is it advisable to change versions 
and branches in an upgrade, or would i be better off building a new 10.0 
box, and migrating my apps over?

Best regards,

Greg Groth