I am missing Bad juju, which was my first exotic bounty and invective, which was my first exotic drop, blueprints in the armory. I have the grimore for both and kills registered for both, so I would assume they would be there.
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https://mobile.twitter.com/knowsworthy/status/634442957488197633 The answer in short is that if it wasn't in your inventory or on a character when 2.0 hit, it doesn't get a blueprint. Sorry to disappoint. It won't go by grimoire cards because of the free codes given out for gjallarhorn, etc. and the programmers apparently don't have a query check for kills with them. tl/dr - if you don't own it now, it doesn't get a blueprint.