In Bug #1957 it was complained that SQL Updates always update all columns and
that behaviour was subsequently changed. Unfortunately, now SQL Inserts don't
get all columns either(even username and sids are missing).
Here's what I did:

In pdb_sql.c you'll find something like this for each field:

if (IS_SAM_CHANGED(newpwd, PDB_ACCTCTRL)) update_the_field

which I changed in VIM with :%s/if (IS_SAM/if (!query->update||IS_SAM/g to

if (!query->update||IS_SAM_CHANGED(newpwd, PDB_ACCTCTRL)) {

This little fix works for me, now all fields are set for inserts and it's as
efficient for updates as it was.

One other thing: The sql dump for mysql is missing the new logon_hours field and
I didn't see a dump for pgsql at all.

Greetings,

Uli