I put databases all over, and now I want to centralize,

[BLUEFROG]

It only removes the reference, whigh is why cleaning before removal is suggested.

Bonjour is discussed in the Help, tutorials, and here…

Bonjour Simplified

To help clarify the conditions under which Bonjour can be used, as well as show the simple steps to setting up such a sync, here are notes and steps to follow. Requirements Bonjour can be used to Sync between devices, IF: The devices are on the same network, noting it will not work over VPN. The network is private or one that allows Bonjour connections or non-standard ports. (Public and corporate WiFi sometimes disallow these.) Your firewall or an application like Little Snitch is Off or has …