Out of curiosity: Did you upload your files lossless and, if so, does google now allow you to re-download also as lossless?
I once uploaded the majority of my music library to google music only to find out later that it downcoverts losless to 320 kbps MP3 and didn't save my lossless files as lossless (so when my computer crashed/I went to download my "cloud saved" music library my files were no longer lossless).
Yeah all my flac was converted to 320 kbps, doesnt bother me. I have my library backed up to external hd which will be my go to if god forbid my new thinkpad dies