IV Jackal VI

So I was like a 42 when I got the "gift" from XBL that gave me access to all the specializations. Cool - so I downloaded it, saw them all, played to 50, chose Rogue, all is fun. Then I realized all but the original 2 (wetwork and operator) disappeared again. Um... what? Why did I lose the others? Anybody else have this happen to them? Is there an explanation that I don't know about from 343 or the community I don't know about? Any help would be appreciated!