[Samba] Migrating Samba-3 to a New Server

[Mike]

Reading from "Replacing a Domain Controller" -
http://www.samba.org/samba/docs/man/Samba-Guide/upgrades.html#id2600749

I am seeking confirmation that this is possible without needing to
manually create all user accounts and samba user accounts.

Server 1 uses Slackware64 ver. 13.0 with Samba ver. 3.2.xx.
New server (Server 2) will use Slackware64 "current" with Samba ver. 3.5.6.
I will not be making and configuration changes the smb.conf.
I plan on giving Server 2 the same host name, netbios name, and static
ip address as Server 1.

Is the migration truly as straightforward as copying the following
from Server 1 to Server 2:

/etc/passwd
/etc/shadow
/etc/group
smb.conf
secrets.tdb
passdb.tdb

Server 1 does use tdbsam.

Thank you for your guidance.