Since there is nothing mentioned @ the Forum about this I put what I've found together with the question.
First for golden images this link will be helpfull :https://help.f-secure.com/product.html#business/psb-portal/latest/en/task_764A7058CC4841F4A0CC222EBF917317-psb-portal-latest-en
But then we have the clones in the dashboard and functioning. Now the 1milion doller question:
How to unregister a server/client from the portal without manually delete the entry?
This is important not to run out of licenses with pvs or provisioned non-persistent (citrix) servers.
I could not find the answer yet. Has anyone the answer for this?