Transfering shows from old bolt to new bolt.

I have an original 1TB bolt.
I had 500GB lying around (unopened) that I just put a 2TB drive in.

Both bolts are now online, activated, etc.

I'm trying to transfer shows from the old bolt to the new bolt, but only about half of them allow transfer.
Am I missing something, or do they prohibit transfer of some shows?

Thanks, Nick.