Here3 RTK passthrough Cube Orange and Mission Planner

HI All,

I’ve downloaded the latest beta firmware for the Here3 and it has some settings that I assume are associated with RTK corrections getting passed through to the GPS from mission planner.
dgnsMode
dynModel
passsthrough

I’m running with UAVCAN on the GPS and have the corrections injected into MP via tcp link to the base station. I can see the corrections getting through to a serial GPS, so the corrections are getting through the telemetry stream.

What do the above settings do, and what are the various setting values?
How do I get the rtk corrections to get to the Here3 via UAVCAN on the Cube Orange?

Thanks
Tim