Cloning moves files that are / should be unique to a single machine.
Exit Roon on the remote and delete the Roon library folders like here:
There is also a Roon file /Users/USERNAME/.rmembid (note it starts with a period and is therefore by default hidden) that should not be cloned to a different machine. Delete it (see the internet for how to make dot files visible in Finder)
To move Roon, make a backup on the old machine, install fresh on the new machine, restore the backup. You may also want to exclude these folders and files from Time Machine etc.