How do I migrate everything from one cPanel to another

I have two servers which are almost identical in the fact that they both run linux, apache, cpanel with whm
I was wondering how do I go about copying everything in the old cpanel whm to the new one ( accounts,databases,passwords,emails etc) while keeping everything intact. I'm trying to make it a seamless transition, any advices on any type of mergeing software or any option WHM or cpanel might have?

Thx