Issues when restoring a backed up Galaxy (CAB file) in SP2023R2

Hi everyone,

I am currently upgrading system platform from 2020 to 2023R2. I have taken a backup of my current galaxy through the SMC on the old and current installation. I then have a completely fresh installation of 2023R2 on a separate machine and network.  

when trying to restore the galaxy and migrating I always get the same error.

Please use a different name. The current Galaxy name conflicts with an existing object in the Galaxy.

I have tried all kind of names, and no matter which name it always gives this error.

Anyone experienced this?