New and old Solution Manager in parallel - how to manage transition?

Hi all

We set up a new Solman 7.1 SP11 in parallel to our old Solman 7.0

We connected some of our systems to the new solman 7.1 (SLD, DAA, Managed Systems Configuration), but during transition e.g. our productive Systems must remain in the old Solman.

How do I deprovision these systems completely from our old Solman so it does not send/fetch data to/from the systems or to SAP Marketplace?

BR

Michael