Hermie
On the 747-400 we use our Flight Manegement System to assess the risks of entering the triangle. On the legs page we enter 'Bermuda Triangle' as a 'go direct' command. If we get a message 'Invalid Entry' then we route around the triangle, but if we get a message 'Not in Database', then the triangle is inactive, and we continue on route.
Hope this helps.
Airclues