I'd strongly recommend asking the same question in the EEPC forum, if you haven't already done so. I'm not an EEPC expert but I know that you need to be careful when transferring machines from one server to another - otherwise it's possible to lose the list of assigned users, and have to recover the client machines. From what I understand as long as you follow a set process then there shouldn't be any problem.
Thanks, I will do that !
But for only transfering systems, what steps would you recommend to do in order to prepare the servers to be able to transfer systems ?
If you are going to install same version of Windows OS and same IP & Hostname as old on a new server then we can simply refer the article KB66616.
If the current ePO is on 32bit Windows OS and new is going to be on 64bit Windows OS then we can simply refer article KB71078.
There should not be any additional steps for eepc but still as Joe said it's better to check with EEPC expert once.