Don't know anything about that StockTrack, but that's a given that Best Buy CA is not doing much with movies anymore, all you need to do is walk in a store to see it.
Point of note, replenishment is a major issue these days on both sides of the border, I'm not sure exactly what's causing it. I've had orders cancelled by Amazon US, Best Buy US, & DeepDiscount due to limited quantities. The Boutique Labels appear to be re-scheduling releases on a regular basis as well.