Migration between two environments which can't communicate with each other

My customer is intending to do migration from test environment to production environment using CCM.

But the two environments are not in the same network.

The environments' setting is as blew.

• BO TEST Repository can communicate with Web BO Server.

• BO PRODUCTION Repository (Cluster environment) can communicate with Web BO Server.

• BO TEST Repository and BO PRODUCTION Repository (Cluster environment) are in the different network, they can't communicate with each other.

• Setting Target Repository manually in CCM.

Questions are:

1. In CCM, as long as both Source Repository and Target Repository can communicate with Web BO Server, the migration will be successful.

Is that right?

2. If 1 is not right, is there additional setting should I do?

For example, If I need to open some firewall port?

3. Is there other attentions should I notice?

Thanks