Probably VM has renewed its deal with A&E Networks UK, the operator of those channels, which is why these swaps are happening.
For those that don't know, A&E UK has just undergone a "few" changes. The parent A&E (American) company is a joint venture between Disney and Hearst and that remains the case, but A&E UK was a joint venture between A&E and Sky.
To appease European regulators to get its takeover of Murdoch's companies cleared, Disney had to sell its stake in the European A&E channels, including the A&E UK ones and it sold its share to Hearst. Additionally, Sky has been taken over by Comcast, so these channels are now a joint venture between Comcast and Hearst, or something like that!
