I will ask this a different way, since I have seen many posts about this, but nobody has answered it that I have found.
Setting up Network with Site-To-Site VPN Connections, routing works fine between Zentyal Servers...
(See Zen-All Routes OK(1).png and zen server success.jpg )
...but their respective LANs will not route.
(See Zen-Lan Routes Fail.png, and zen lan route failure.jpg)