Using pedal/other powermeter number to control EGR wattage

Currently, when setting my powermeter pedals (favero assioma) as the preferred powermeter, the app still uses the powernumber from my kickr core to set the ERG mode. However, for sake of consistency I would like to be able to use the powermeter to set the ERG. My kickr core overestimates my powernumbers, increasingly so with higher power numbers, and also drifts over time.