Switching Operation Systems from Ubuntu 32bit to Centos 64bit

[wdman]

I'm trying to switch from 6.0.7_GA_2473.UBUNTU6 to zcs-6.0.7_GA_2473.RHEL5_64.

On Moving ZCS to New Server - Zimbra :: Wiki it says:

Switch from 32-bit to 64-bit
If your operating system and hostname are the same, but you are switching from 32-bit to 64-bit, follow Network_Edition:_Moving_from_32-bit_to_64-bit_Server (This applies to both the Open Source and the Network Editions).

Since the operating system is not the same I'm wondering - should I follow:
A. Moving ZCS to New Server - Zimbra :: Wiki "2.3 Switch Operation Systems or Hosts Using rsync"
or
B. Network Edition: Moving from 32-bit to 64-bit Server - Zimbra :: Wiki

[phoenix]

There is only one Certified document for moving from 32bit to 64bit systems, it also tells you in that document about changing operating systems - follow that document.

[wdman]

You are right - I actually have that line underlined.
(updated the wiki too)

Thank you Bill :-)