The Polyend Tracker allows you to send out MIDI program change communication using a MIDI step and its properties.
The MIDI PC communication is being sent right before the MIDI notes. There’s a very small gap between them. If there’s a need, try setting the PC change a step before. The last step of the previous pattern. If this solution would be sending the PC change too early, then you can try using the micro move step fx on that particular step. This way, you should be able to match the used devices.
Polyend Tracker is not programmed to receive MIDI PC messages (as far as firmware version 1.6).