Connect StoreOnce to different CM ?

I tried to migrate our Cell manager to a new server but after 3 weeks I gave it up. There are many errors in database and always something didn't work, etc.

I installed new Cell Manager(latest relase) and I want to connect with existing StoreOnce and import backups to a new CM.

Before I start I want to ask if it`s possible ? I found this post where are some scripts how to import in command line community.microfocus.com/.../dp-support-tip-importing-media-from-a-storeonce-store


How is process ? Import client of StoreOnce server in new CM, create Device in Devices & Media, use scripts for importing ?

Thank you