sounds odd but i think - and i'm not at my music pc at the moment - a blue line is showing data of some form but not anything that will play.

if you select the track you want to merge to and use the edit/track/erase data does the blue line disappear and allow you to merge the tracks?

if so that's a workaround but why blank tracks have blue lines on i'm not sure.

Last edited by Bob Calver; 02/24/21 12:24 PM.