Think signal path. the midi track in PWT must exit thru the midi port on the interface or sound card, so PWT must have each track set to whatever that is. Like on my system it is "US-800 midi".

Then the keyboard must be set to receive the midi. It may have a setting like global, or all or something. This is needed for it to receive all the tracks.

At that point it is up to the Yamaha to read the data and assign patches and such. That is where Patch maps come in handy so that what the Yamaha "sees" is the correct patch assignment request.

The result should be the Yamaha speakers sounding the song, and also the option to patch out to a better sounding system.

Lenovo Win 10 16 gig ram, Mac mini with 16 gig of ram, BiaB 2022, Realband, Harrison Mixbus 32c version 9.1324, Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app, Komplete 49 key controller.