[Mailman-Users] How to migrate existing lists to a new Mailman installation

[kk CHN]

Hi People:

 I am using mailman 2.1.9 and postfix , I want to migrate my old lists
running in another server to this new server machine , How it can be  done ?
,

  any one of you have a very  simple method OR   document for this please
let me know those :

Thanks in advance
kk