Hi, My company have 2 server. One is old, work with OpenERP6.1 and Two is new.

I want to create module work with OpenERP7 in  new server and I want some model data from old server. If one of them is change, it will change another other server.(Both are online) 

example I have customer data in old server, and I want use this data in newserver. If i edit customer A data in new server, old server will be update and if  I edit in old server, new server will update too.

I think I choose transfer data from old server to new server, but there is good way to do??

sorry for my english, and thank you for your help