Exclude groups from search

In DEVONthink 3 it is possible to exclude groups and their contents from search by selecting the option in the info for the group.

DTTG3 does not have this option in the GUI (can this be done in future?) but I’d expect DTTG at least to respect the settings made in DEVONthink when the DB is synced.

As far as I can see, DTTG does not respect these settings.

No, this is not a feature of DEVONthink To Go at this time. And that is not metadata about the groups so it isn’t passed along via sync.
Perhaps in a future edition this may be possible.