What didn't work for you? This is one of my main uses, getting episodes from only one season, out even just the first couple to see if I like it. Worked since forever for me.

Changing which files are 'active' doesn't always take effect correctly until the client is restarted, which can lead to 'stalled at 0kb/s' downloads from all possible peers even if the torrent is stopped and then started without restarting the full app.

IIRC it failed to download anything.