And both copies are licensed.

@sweetp Thanks Russell. I do have iCloud enabled on both Macs, but nothing is syncing across.
New Mac:

Old Mac:

Is there a way to force the sync? Thanks!

I've got a new Mac, and am wondering how to move all my Cookie settings from the old machine to the new one. I have
iCloud: Sync favorites, settings and preferences turned on, but it doesn't appear to be saving anything to my iCloud Drive.