Scheduling TOW rides far in advance, which one?

The TOW signup menu allows me to sign up for Stage 2 rides beyond the March 16 end date, e.g. Stage 5.
Does Zwift recognize this as valid?
If it is valid is the ride the future Stage 5 Class A ride or the Stage 2 Class A ride?

This looks like a glitch, or just another reason to never use the Zwift events website for any reason whatsoever. I joined one of the rides on Saturday the 19th and on the companion app it shows me signed up for stage 3, not 2. So it appears that this will sign you up for whatever stage is actually taking place on the day, not stage 2.