Claudio,
I'm not sure if I understand your question.
1) What version of Lookout are you using?
2) Are you using a server-client relationship and you can't see the data in your clients?
3) When you move your Lookout process, have you adjusted where to find your historical database (this can be set under File -> Modify Process or if you are using a hypertrend, you can make sure that your path is pointing to the appropriate location - under the trend properties).
Please give me a little more information and I will try to help you resolve this issue. Thanks.