I am confused (not an unusual state) by the complaint concerning Tracks - Merge which I find works Ok merging highlighted Midi Tracks and Audio Tracks to empty tracks. On the other hand PTW is different requiring a resident DXi/VSTi plugin in order to process Midi Tracks to audio. In addition, the command is happy to merge empty tracks to audio. I have PTW version 2010, but intend to upgrade shortly and hope to find that this command has been corrected to work similarly to RB