Nearly all the H2 programming has been or will be moved/aired on History (and I mean new episodes). Oh, YES, Ancient Aliens, Hanger One, etc. has been VERY popular, in fact, many viewers complained that they could no longer view such shows, and those like it, on the main History channel because their MVPD either did not carry H2 or have H2 at too high a package, and because this extremely popular programming was on the less carried H2, those shows were not making the money they could have had they been on History with its wide access. The plan was to make H2 a compelling channel to MVPD's to carry it or at least move it down to the less expensive packages, allowing A&E to have a second highly popular channel to it History. But still not enough MVPD's either carry H2 or don't offer it at the lowest package where History and the greatest number of viewers can found, meant that the highly in demand shows on UFO's, etc. was not making the kind of money it could if it were on the ubiquitous History.
Sorry, but those Aliens aint going nowhere, but to the big main History channel. At least with H2, this left History to at least be a little less about Ancient Aliens and UFO's etc. It was a good separation of content. Instead, look for History to be MORE about Aliens and UFO's, etc. because their H2 home will no longer exist. It's like bad relatives moving into your home because theirs was destroyed in a natural disaster.
Still a smart move by A&E. Now those Alien shows can make them even MORE money on History and they rid themselves of trying to come up with programming for the coming Vice, which sounds like a horrible channel, so far.