Oh...Those Jesuits!
After the Jesuits were expelled from France and Spain in the mid 18th Century, the Jesuits turned to England to protect their vast treasures, more importantly to the...
Freemasons!
One Example may be explained in the current TV Series...The Treasure of Sacambaya!
From the story...The Jesuit's Treasure of Sacambaya (according to my Theory) the Jesuit's treasure was secretly removed from its buried location at roughly the same time period as when the Depositors created the Oak Island Money Pit.
My Theory has the majority of the Jesuit's Treasure moved and stored to their Havana Cuba's Cathedral.

The Freemason Admiralty working in secret with the Jesuits moved this treasure to Oak Island, with the capture of Havana in 1762.
The Freemasons and Jesuits were geniuses with their skills at mining and tunneling.
Watching Treasure Quest's Season 3 Finale Episode 8 it shows what I believe to be an ingenious design for the Oak Island Money Pit.
https://www.youtube.com/watch?v=Sqz5gC9OVEU&feature=youtu.be
Spoiler Alert!
A Tunnel was dug from the top of the Mountain down to a Treasure Vault which is flooded to over a 100 foot depth.
Season 4, Treasure Quest is planning a dangerous dive down into this Vault to prove what appears to be gold buried within, but I believe the Jesuits had a more "easy and ingenious way" of removing this treasure from their vault.
The Freemasons and the Jesuits were very astute...Alchemists.
The Science involved has to do with the design of the Tunnels and the Treasure Vault which incorporates Air Pressure to offset Water Pressure.
It was demonstrated to the Jesuits on the simple basis of a Test Tube.
"The air pressure in the system pipes above the dry pipe valve is sufficient to exert a greater force on the top side of the clapper than is exerted on its underside by the pressure of the water supply. ... For example, 30 pounds per square inch (psi) air pressure can hold back 180 psi water pressure."
Using the Reverse design as was used at the Oak
Island Money Pit Shaft and Tunnels, the Treasure Vault of Sacambaya did not install a Plug at the end of the Tunnel to flood the Vault.
The Jesuits used the granite of this Mountain as the Plug, stopping the end of the tunnel as it traversed back up the Mountain.
The Jesuits would then dig a short Tunnel towards the Mountain Tunnel to place the Powder Charge in, thus releasing the Air Pressure and draining the Shaft.
Oak Island...was designed ...only "Vice Versa"!
Rather than to "Remove" the Treasure...It was designed to "Protect" the Treasure!
I am inclined that Father Eusebio Kino was responsible for the moving of the South American and Central American's Jesuit Treasure to Northern Missions, with the help of the Freemasons.
A
Powerful Union of the Freemasons and the Jesuits which still
Exists Today!