Triathlon or multisport race

I created a multi-sport shared event ( Oxford Olympic Triathlon 2026 — Triathlon event, in United Kingdom ) and I went to the trouble of creating the GPX files from course maps and created the shared event successfully.

I tried adding this multi-sport event (which has all 3 disciplines entered correctly) to my calendar but the race in my calendar does not carry over the 3 disciplines from the shared event.

As per the above, I could just create 3 separate races but I’ve already created the shared multi-sport event?