Based on the dialog someone posted a few pages back, it *sounds like* (totally unconfirmed, of course), you need to trade the original piece, plus the corresponding Arch-Omega/Ultima component to receive the new upgraded piece of that armor, or just the new Arch-Omega/Ultima component to receive the corresponding piece from the totally new set.
Edit: Here it is (from Kanachan's post), with some notes from me (same idea for Ultima stuff with slightly different flavor text). The whole thing is pretty sketchy from the text alone, so I doubt we'll figure this out until someone actually obtains a piece (which, of course, won't be for at least three days).
First pattern, sounds like after trading an Arch-Omega part (not upgrading old set):
Yes...it's unmistakable.
A fragment of Omega, and a far more ancient specimen than any we've encountered thus far! (<- referring to new Arch-Omega body parts?)
Now, Hadiyah will have no choice but to recognize my efforts!
Wilhelm's day has come, and it shall be a glorious one! Muahahahahahaha! (<- u so crazy Wilhelm)
Second pattern, this part confuses me. I'm not sure whether the first item refers to body parts or something else, and I can't tell if it directly follows the text above or is some unrelated conversation:
Ahem... Word has it that there are other curious materials to be found in this otherworldly place. (<-Arch-Omega body parts?)
Deliver to me some samples along with this fragment, and I shall reward you with rare pieces of equipment from the Consortium's vaults. (<- Glossy fragment?)
Furthermore, should you already possess any pieces of equipment from a previous transaction, I would encourage you to deliver them to me along with this segment. (<- Old Homam)
The Consortium has in its employ a smith of the highest renown.
He shall work his genius upon your treasured possession. (<- Upgrade that old Homam)
I see you are a [man/woman] of your word.
As am I, my friend. Take this, for you have earned it many times over.
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