Air Asia Premium flatbed from Chennai to Jaipur via KUL

Air Asia website is selling India domestic destinations via KUL...

This sounds strange as airlines are usually not allowed to serve domestic destinations via international transit point.

Of course there's a cheaper option via Bengaluru which is fully legal and any sensible person would book that. But what if one wants to try Premium flatbed (available only on A330 fleet served by Air Asia X)? Air Asia X operates those between KUL and few Indian cities Jaipur n Amritsar etc.

I tried few other destinations like Chennai-Amritsar etc but couldn't get this via KUL option. May be it is a technical glitch? Earlier Air Asia wasn't selling one stop tickets within India- like it was not possible to book Chennai-Pune via BLR. Now they seem to be allowing that.

Malindo air also sells similar tickets- not sure anyone ever booked such a ticket and flew successfully from India to India via Kuala Lumpur... If they are priced at par with domestic flights some might give a try but since these tickets are more expensive than any domestic flight, no one has any incentive to book.