Google Play Music (on Android phone)

[TooNice]

Is there any way to save/export Google Play Music playlist to a file? Should be a pretty basic feature, but I can't see the option.
At the moment, the application allows you to create playlist, but it automatically removes the songs on the playlist if it can't find the file anymore. This is not really desirable, as sometime the reason it can't find the file is because I have temporarily removed the microSD card where the songs are stored (e.g. to copy photos on that card to my PC in a way that is faster than going through the phone).

[TechMinerUK]

You'd need to use a third party service to achieve this (Which is annoying but I had to do this when I moved from G-Play to Spotify and then back to Youtube Music)

What might work for you is you can upload so many songs to Google Play which might keep them in your playlist?