Missing iTunes music purchases

I recently became an Apple Music member. Over the years I have purchased a few albums from iTunes and have kept them on my PC. But due to some syncing issues when I moved over to Apple Music, I lost a couple of album purchases. They were either deleted or were merged with my iCloud collection. I can play them through Apple Music no problem, but the actual downloads are no longer there. There is no way that I have found to re-download these items without re-purchasing the albums. Is there something I'm missing?