Exporting empty Blueprint deletes it

[joshinils]

I can't easily delete empty blueprints. I'd have to make a Blueprint of something, hit ok, open it again and then delete it (or put it in a chest and shoot it).

But the Export Button still shows up, but when i try to export it i get a message that wouldnt make any sense (which it doesnt).
So instead that button could be a "delete me"-button, to delete the empty (and only empty to avoid mishaps) blueprint.