I created a playlist of 200 songs on my laptop 2 days ago. Yesterday I added another 200 to the same playlist via my ipad. Now I am playing the playlist on my laptop on shuffle but it only plays/queues the origianl 200. If i override and play one of the second batch it only plays songs from the second batch. In other words it doesn't seem to combine the two lists despite the full list of 400 showing on my laptop version of Spotify.