Only if you're writing current canon, my MechWarrior story takes place after the second last episode of Season 3, Games Ponies Play, I believe is the episode.
But this is unfortunately another warning sign that the show is finally winding down. A lot of TV shows have this need to tie up all loose ends // I'm talking to you, Futurama, Star Trek TNG, and Super Natural. // A few hints of this happened back with the Moondancer episode. Essentially what this is, Hasbro, like the later episodes of the Powerpuff girls are looking for any dangling threads they've left behind either on purpose - Discord being reformed - or inadvertently - Moondancer - and just tying them up so people don't bitch about it
I suppose I should be a bit more optiumistic, but every good damn show ever from the people that have worked on MLP, and it's basically all the same people, haven't ran longer than 5 or 6 seasons. Foster's Home For Imaginary Friends, PPG, Samurai Jack, Dexter's Lab. You know, my childhood, kinda, I didn't really watch Cartoons all that much now that I think about it. Ended up watching things like Mythbusters, Stargate SG-1, or movies.