workaround. From connect via pc, if you send to device a single training (there's button) and then start syncro via garmin express, you can find training calendar, but when you syncronized via ios thi calendar disappear.....
same problem here. This is annoying as heck.
I noticed that the training plans are coming over under my workouts. WTF.
It seems it was never fixed, and that a business decision was made to purposefully remove support for training plans and calendars across the Garmin product range. That's one way of dismantling your business.