how to change from Protected ACC to Purchased ACC format? I delete

I follow these instructions but at the end it returns to the Protected ACC format.

1. Open iTunes.
2. If you're not already signed in, sign in with your Apple ID and password.
3. Click the My Music tab at the top of iTunes.
4. Click the song or album you want to upgrade.
5. Press the delete key on your keyboard. In the message that appears, click Move to Trash.
6. Click the iTunes Store tab at the top of iTunes.
7. Under Quick Links on the right-hand side of iTunes, click Purchased.
8. Click Music in the upper-right corner of iTunes.
9. Find the song or album you want to upgrade.
10. To download the new version, click the iCloud Download icon on the song or album.