CentOS - Dec 2016 - disk selection with ks file in 7.3

My existing ks files leave the disk selection unset in 7.3. Checking the manual,
I do not see changes in that area so performing a manual installation and
comparing
the resulting config to mine yields little difference. Taking the anaconda
generated
disk config section and deploying a new ks with this halts at disk selection
unset still?

Anyone seeing this?

jlc