What has Apple Music done with my ALAC files
All my CD collection was held in iTunes in lossless format. Since starting my Apple Music trial, which I almost certainly won't renew, I noticed that all of my Apple Lossless files had been changed to 256kbs AAC files. What will happen when I quit the subscription service? I'm gritting my teeth for the probability that they are gone. I do have a backup of the music library but it's a couple of months out of date and missing quite a few CDs.
Thanks in advance.
iMac, OS X Yosemite (10.10.2), iPhone 6 ; ATV2; MBP(2014)