Yeah that Heavensward relic first step where you could turn in last expansion's completed relic was a bonus, a thank you to those that finished it. It wasn't meant to be something that could be done for the later steps. The alternate way of getting the relic in Shadowbringers they hinted at it being what people that didn't like Eureka preferred; the old way, the tome grind/fate grind/lights grind in existing content. I was set on doing this relic the old "Heavensward" way but after seeing how different Bozja is to Eureka I might actually really enjoy Bozja. We'll see though, I really liked how we used to get relics before Eureka.