The need to bring new bloodlines to Vollrath Stud prompted Maubach to sell Worldwide to Australian rider Claire Seidl-Wickens in 2006.
Since then, Worldwide has gained selection to compete at the Paralympics this year and realise a childhood dream for 51-year-old Victorian Formosa to represent her country.
"Since I was a child, it's been a dream of mine to represent Australia. I was told that I would never ride again so to be at this level is just fantastic. Wearing the uniform and seeing the Australian flag hanging in the stadium will be unreal," Formosa said.
As a result of his performances, Worldwide was approved as a Hanoverian breeding stallion in 2009, joining a select group of just eight other horses in Australia. In New Zealand, only four stallions are approved.
Maubach and Rosenblatt congratulated Formosa and her team on the selection, saying: "We promise to keep all our fingers and toes crossed for a successful competition. Keep your nerve Joann ... just sock it to them!"
Worldwide was bought by Formosa in December 2011 and the combination have trained with Manuela McLean since February.
The Grade 1b Paralympic section requires a dressage test involving medium to collected walk, a quarter walk pirouette and a long rein walk, as well as working trot and lengthening in the trot.
This has meant Worldwide has had to learn how to work under very different aids.
"Jo's injuries through accidents on horses have disabled her so much that she has very little leg strength (she walks with crutches), as well as very poor arm strength, however, she is strong in her core and rides him exceptionally well," McLean said.
Also on the Australian equestrian team is Hannah Dodd, 20, Rob Oakley, 50, and Grace Bowman, 22.