[Samba] Best upgrade path from 4.0.0rc5 to 4.1.4

[Brian C. Huffman]

All,

I have a Samba 4 server that is currently running Samba 4.0.0-rc5. It 
looks like the initial install was 4.0.0alpha20 and then upgraded to rc5.

I'm currently using bind_dlz for for my DNS.

What's the cleanest way to upgrade to a 4.1.4 install while retaining my 
data?

Thanks,
Brian