HRV Physio True Up

Does anyone know if HRV data and training readiness is covered by Physio True Up?

Let's say I wear a 255 for 2 months and collect the necessary data for both.

Does this get synchronized by physio true up when I change to another watch with the same hrv and tr capability?

Or does changing the watch mean starting all over again (wait several weeks for hrv to establish)?