Smartshunt configured as DC Energy Source/Alternator not showing up on N2K network?

I have two smartshunts measuring my two alternator outputs. I’ve configured as DC Energy Source/Alternator and both show up on Cerbo but not the N2K network. When I look at the VE Can devices neither device is listed there. If I change the smartshunts to DC Energy Source/Solar Charger they show up. Any particular reason when configured as alternators the Cerbo doesn’t output to the N2K network?