Hello! I haven't posted much and am somewhat new to the program and forum!

I recently uninstalled/reinstalled BIAB because I was having problems with missing sound tracks and now when I open files I am working on, "Artist" appears in the mixer where there should be a drum or other real track in place of the instrument that was there a minute before. And I can't get it back!

For example, today I am working on a song and I change the style; then "Artist" in orange writing appears where there was the drum track and now the track is empty.

Is this a setting I have accidentally set? Any suggestions are much appreciated!