Volume levels in DAW
I exported file into a MIDI format and imported it into a DAW (I use Cakewalk Sonar Artist). In Cakewalk, some of the instrumental tracks can be volume adjusted and other tracks cannot. Does this have anything to do with the Musescore file which was converted into the MIDI format. I want to record audio voices over the Musecore tracks. Is this the right way to do it or is there a better way?