Undocumented preference - what's it do?

While looking at the preferences I noticed one in VST-Plug-ins section called “Synchronize Plug-in Program Selection to Track Selection” (see attached). Clicking on the help button it turns out that that option is not included in the documentation. Does anyone know what this does?
Capture.JPG

I think this is that “Synergy” feature that is discussed on the “what’s new” video where, in some instruments that support it (like HALion series VSTis), when you select a MIDI track in Cubase, it automatically selects the connected program slot in the instrument (and vice/versa?).
HTH
J.L.