After Attunement, Tier 91+ Epic or higher gear can swap Attunement with another Attuned gear of the same Tier …
After Attunement, Tier 91+ Epic or higher gear can swap Attunement with another Attuned gear of the same Tier and same slot.
After the swap, all Attunement traits of that type will be exchanged, including Attunement History and the Re-attuning pity counter.
Swallowcall gear and trial gear cannot be swapped.