Need Help With Frame To Airbox Blow By Tube Routing - 2014 Te310

I pulled my tank for the first time today and noticed the blow-by line from the frame near the steering head is connected to nothing.
Parts fiche shows it connected to the airbox (see attached) but my airbox has no such port.
The bike was "de-restricted" by the previous owner's dealer but I can't believe they'd replace the airbox.
Did they just let this dangle?
Where should it go?
Thanks guys.

The port in the airbox is hidden under the frame beam and It was certainly plugged (I hope for you) by the previus owner. You should see it by looking to the airbox by the right side of the bike.The blow by line is the oil vapors recirculation to the airbox. You could leave it discharge in atmosphere (like in the tc 250) but If it was mine I would replug it (like i did on my 310) or at least mount an oil breather filter to it so dirt wont'be sucked up the line

Thanks. I must be blind. I'll have to take the air filter out and look from that side (I didn't take the take off again yet).
I wonder if I have the original connector boot. Mine apparently has the airbox connector from a TC250, is that why I can't find the port? It's this one:
https://www.ktmpartspro.com/oemparts/partsearch/husqvarna?partsearch=8000h6492

Al

Also the TC 250 should have the hole in which the oil vapors recirculation hose should plug with the 800091586 union. In the tc that hole is plugged with 8000H3569 plug. Yes your intake rubber the TC one

Much appreciated. I'll dig deeper.