Auction: some learned warglaives are present in 'missing' filter

[shifuren]

Noticed with few different warglaives already, that even if you have that specific item learned, they still show with 'missing IDs' / 'missing sources' filters. Issue seems to be specific to warglaives, and probably not all of them. Dunno if that's blizz API problem or wowthing bug though.
Example item: Jenrette's Jagged Warglaive