"False Classic Spectacles" Item does not convert to "The Faces we Wear" equivalent

Date & Time: Release of Dawntrail - Present
Frequency: Always
World name: Balmung
Character name: Titor Jaraba
NPC name: Calamity Salvager
Party or solo: N/A
In-game time: Constant
Area and coordinates: Any location of Calamity Salvager NPC

Steps:
1. Have a pair of "False Classic Spectacles" in inventory (An extra pair -the character already learned the associated fashion accessory/eyepiece, these ones are intended for sale)
2. Talk to calamity Salvager
3. hit "spectacles exchange"
4. Hit "exchange spectacles (convert to facewear)
5. The NPC will say that you've already converted your facewear
6. The extra "False Classic Spectacles" in inventory are not converted to "The Faces we Wear" eyepiece equivalent. The item cannot be traded or converted, so any spectacles held prior to Dawntrail are useless.


The patch notes said that these items would continue to be available for trade on the marketboard, so I think these are a bug, as the "False Classic Spectacles" item is marked as untradable, and does not convert to the proper tradable item.


Expected behavior: Existing extra fashion accessory versions would be converted to the new eyepiece 'Faces we Wear' tradable version.