Not sure, I noticed the same thing when SHO.com sent me notice that the new season was started .. checked MC and they're showing reruns of other seasons. TMN does tend to get shows and movies MC doesn't air, for example MC doesn't seem to have any contract at all with Disney Studios. With Astral running TMN and Family I get a feeling they might have an exclusive with Disney which is why they're airing the Disney movies while leaving MC out in the cold.
Meanwhile, looks like we need to seek BS from alternative sources in the west if you want to stay current. Oh, and does MC even air BS on the HD channel when they do air it?
Frankly MC and TMN should be airing the exact same programming IMO, I'd love for TMN/MC to merge suites and deliver nationwide, I mean they've managed to partner up for HBO Canada (which Astral runs), so why not do their entire suites and deliver a dozen channels?