I have copied and pasted a wav file of my band on track 1 which is fine but when I come to record some keyboards for example from the library on track 2 it's also recording track 1 which is bizarre, how can I stop this happening as when recording with all library instruments I don't get this problem. I am using Magix Musicmaker Premium 2019 Version 28.0.3.51 and Windows 10.