Despite international interest, the minimum requirement of three teams could not be met in this only North American leg of the series.
Tom McEwen provisionally tops the CCI5*-L with JL Dublin; Liz Halliday-Sharp sets the pace in the CCI4*-S, with Colleen Loach sitting in 3rd.
UK national governing body says the growing awareness of social licence means it cannot vouch for horse welfare in classes not run under its auspices.
Alyssa Phillips (USA) wins with Oskar, while the Canadians all place top-12 after the jumping phase of this very challenging three-day event.
Canadians are off and running with Karl Slezak and Fernhill Wishes 19th in the 5* and Colleen Loach with FE Golden Eye 9th in the 4*.
The pandemic and cross-border travel restrictions resulted in lower entries but great weather, great competition and autumn colours prevailed.