Migration of Users and DNS to UCS 5.0-2 from 4.1-5


I need to migrate an UCS 4.1-5 to a new UCS 5.0-2, to do this I have tried to upgrade my UCS 4.1-5, but I am having a lot of problems from the first Jump to 4.2-0.

I have also looked ups to the documentation to do the migration manually:
But this method require that I migrate to the same version that we have right now.

I need only migrate the users configuration and the DNS, is there some other way I can do this or a guide I could follow to do the transition.

Thank you for your help.

Best regards