Complete iTunes Match music library is gone after Apple Music upgrade!

I have subscribed to iTunes Match since it launched. Yesterday I began the Apple Music trial.

Today, I log into my Mac and all music not on my hard drive is greyed out. I close iTunes and open again. Same issue.

I sign out of iTunes and sign back in. Now, all music not on my hard drive is missing.

If I have an iTunes Match subscription, why is my music missing and how can I get it back? Where my library was over 5,200 songs, I now have only 152 songs.

Please assist.