- Set up the Dropbox sync location exactly as you set it up on the first machine.
- If you’ve done it correctly, you should see any importable databases in the Remote section of the Databases list on the right when the sync location is selected.
- Double-click one and save it to the local machine, ideally the Databases folder in your home directory,
- Repeat the import process with the other databases as needed.
Then get your proper, primary backups going, either via Time Machine or other snapshot-style backup process - Arq online is good; Carbon Copy Cloner is a great local option.