Q: Change a users short or long name

One OD Master has Replica's... Where does your user's name show up as "z1234567890?

Stephen,

The wiki maintains its own database for the posts, etc. That's the "other place". There used to be a process for rebuilding/updating that database to contain updated information from the OpenDirectory accounts. I'm not sure about the new wikiserver in L/ML. I'll poke around the docs and see if I can find it. My refernece to the wikiadmin command is that it might contain such functionality. 

Also, could you provide the output of...

dscl /LDAPv3/127.0.0.1 read /Users/frank

Meaning your short name is z123467890... You can change that by going into server.app's Users section as an administrator other than frank (I guess) and right-click the user frank.

Now choose Advanced Options.

In the short name section change the name.

Just make a new account with the right settings and migrate everything (mail, files) before removing the old user frank...

Not really, but if it will make you feel better, take out AuthenticationAuthority and GeneratedUID.