SD Card Storage

[Danicac]

I've looked but haven't been able to find help on the following.
Spotify offers me the option to save my music to my SD card however when I transfer my music to my SD card using this option it seems to default back to the internal storage and need to download the music again. If I set it to SD storage after it defaults back it cannot seem to find the previously transferred music. Any helpvwould be appreciated. Thanks