[inapis]

I did but those files are not immune to Apple Music's licensing issues or bugs. If the track was matched and not uploaded, then those albums can still be greyed out when they are pulled from the catalog. And iTunes match still is not accurate. A lot of times tracks in one album are matched to individual singles on apple music.

[sbaildon]

Uploading your local collection directly into your iCloud Music Library should prevent Apple from messing with the data. I uploaded some albums months ago and they've been untouched by Apple so far.