There are clear cut rules regarding updating train name in regional languages in IRI:
1) English and Hindi will be common for all trains
2) Regional language of source station must be updated
3) If source station is Hindi speaking place (like Madhya Pradesh, Haryana etc.,) then regional language of destination station must be updated for both up and down trains
4)...
more... If both source and destination stations are Hindi speaking places then regional language must be left blank