i figured i should put this post in here seeing as its probably a basic question.
as someone who is relatively new to midi i have a problem with my cakewalk sonar i find that if i insert a soft synth (cakewalk tts-1 for example) on a certain track then use a particular patch on the track, if i then use another cakewalk tts-1 patch on another track it removes the original patch.

anyone any suggestions as to what im doing wrong.