Addressing the elephant in the room, post Amphoreus scaling, Irontomb/Scepter δ-me13 went KABOOM due to the
Chrysos Heirs obliterating all that remains of it. Logically, this means
the Astral Express loses their Ascended State scaling and revert back to their Late Penacony Arc Key scaling due to the accumulated power of all 33 million cycles being solely tied to Scepter δ-me13, Amphoreus, and the simulation's existence as explained above.
By proxy, this includes the coreflames since they are
literally just electrical signals for the same purpose for Scepter δ-me13. However, they are more complicated. It is implied that
Dan Heng kept his coreflame. I will be going a different approach to solve this issue instead of just denying these scans.
The coreflames are just pathstrider powers. In Dan Heng's case,
the coreflame of Earth is just the Path of Permanence and he himself calls it that. Pathstriders also get stronger and get more abilities
the more they walk further on their paths. This is important because 3.6 is literally him
walking further onto the path of Permanence and accepts his past/current selves. Essentially, they do not possess the coreflames anymore and they do not possess the power amplification boost from them to maintain their
304 ZettaFOE scaling. However, their journey from Amphoreus while maintaining their respective path coreflames (Earth/Permanence, Worldbearing/Trailblaze, Time/Remembrance) allowed them to walk further down their paths and maintain the abilities gained from the coreflames.
Therefore I propose they revert back to their
30.4 ZettaFOE from the Late Penacony Arc but they keep their abilities gained from the coreflames. This also means
Sparxie and her goons gets nerfed to the same level as well due to scaling off of them.
(If this isn't enough reasoning then another reason is that its wildly inconsistent for Planarcardia enemies to be Irontomb level so this supports them losing the power boost gained from the scepters)