Beatgrid will not Reset

I'm experiencing what appears to be an odd glitch in RB6.

I have a track that's off the grid "Brown Eyed Girl". I've gone in and adjusted the beatgrid & tempo using multiple points of "Make an adjustment from the current position" with different beat intervals and some beatgrid adjustments. BUT, I'm unable to start over fresh with this track. These changes seem burned to the track. 

1) If I analyze the track again, nothing changes. The tempo changes multiple times, precisely where I changed it originally. And the adjusted beatgrid gray lines are there in the background.

2) If I remove the track from the collection, delete it from my playlists and even remove it from my physical folder, then re-import the track to RB6, it will show 0.0 BMP, clearly be analyizing, then STILL have the same beatgrid adjustments that I originally made. 

Thus, I cannot reset the beatgrid to it's original state. 

What's going on?