For the input they are separated, as output they are the same. You can merge the input into the output via Showcontrol, using the templates "receiving Art-Net / DMX / sACN "
You do have to setup the Art-net input and output universe in the settings of the IoCore.
I think you can control multiple single channels via rs232 > Showcontrol > DMX/Art-net but not an entire universe, if that is what you're trying to do.
You have to setup a control task per channel.
Greetings,
Bootsy