Decommissioning of Solution Manager 7.0

Hi Team,

Overview & Requirement:

We have a Solman 7.0 system, we are planning to de-commission the system and Three Systems were connected to Solman 7.0 ( One ECC & Two BW systems). We have disconnected these three systems and connected to Enterprise Solman 7.1 SP12. The team is able to create the CHARM & Incidents successfully in Solman 7.1.

Now,the business wanted to De-commission or Retire Solman 7.0 and data has to be retained for future audit purpose.

Question

What are the possible options of Archiving or Data Migration?

Limitations:

We do not want to migrate the data from solman 7.0 to Enterprise Solman
7.1

Thanks & Regards
Moti Ejaz Sherif Shaik