Some also criticised the process by which riding was replaced, complaining of a lack of transparency, but an appeal to the Court of Arbitration for Sport by the Danish Modern Pentathlon Association was dismissed.
Advocates of the new fifth discipline argue it makes modern pentathlon more accessible.
It should also avoid a repeat of the upsetting scenes of Tokyo 2020, where German coach Kim Raisner was sent home in disgrace for punching a horse that refused to jump during the women’s competition.
All of this means that this year’s UIPM Congress, while not elective, promises to be a contentious gathering.
The UIPM has said the Congress will be streamed on the UIPM TV platform.
Modern pentathlon has been left off the initial programme for the Los Angeles 2028 Olympics.
However, the International Olympic Committee has said there is a “pathway” for it to be added.
UIPM President Klaus Schormann has led the organisation since 1993 and is in his eighth term as President.
The German chaired the UIPM Fifth Discipline Working Group which was tasked with overseeing the process of finding a replacement for riding.