Notable Atlas "The Way Forward"

Atlas shows up after allocating the 10/10 boss atlas tree. The problem is the atlas is unallocated, but when I remove my atlas point from the main tree Atlas, "unallocated" is gone from the notable atlas. Is it a bug? Does anyone know the function of that Atlas?

Yeah, I was wondering about this too and found your post. Hope we get the answer.

still no answer?

THe word "unallocated" is a bug, it is still count as allocated
If atlas node active when you kill Citadel Boss the fragment become corrupted one like "Primary/Secondary/Tertiary Calamity Fragment"

Same question and situation

Couldn't find info about this, but isn't this for t2 arbiter fragments?


Edit:
Yup it's for Uber arbiter
https://mobalytics.gg/poe-2/guides/uber-arbiter-calamity-fragments