Initially this seemed to work well, but I've noticed that the deck import from Moxfield doesn't actually work correctly. It iterated through all of my Commander decks, for instance, and all of them are missing 10-15 cards, sometimes more. I only realized it because it was telling me I had some specific cards available that I knew I didn't. If you manually add a deck it will have the right number of cards, but I'm not going to do that for 50 decks.