Random Locked Tracks

I have Cubase Pro 10.5 on High Sierra and today when I opened my song I noticed a few tracks that had the Lock icon on the clips. I selected the clips then went to edit>unlock but they didn’t show as being locked. There is also no lock icon on that channel but there is on all of the other channels. I also cannot delete these channels or move them.
Any help would be appreciated.


Isn’t the track locked? Or isn’t the instrument frozen?