RTO India — Discrepancy in renewal of driving licence

I was holding a Delhi driving licence No:P94090458 issued in year 1994 from RTO Sarai Kale khan for Light motor Veh. & Motor cycle.
I expired in year 2010.
As I'm presently residing in Leh, Ladakh so I contacted RTO Leh for renewal after expiry of licence. They asked me to get an NOC from delhi for the renewal. I got NOC and it was renewed. At that time RTO leh wasn't computerised so it was manually done.
But when I applied for renewal second time RTO leh was computerised and same licence this time was issued with discrepancy. Same licence this time was renewed with Light Motor Vehicle (LMV).
When I approached RTO Leh they are saying we don't have previous records so you need to apply for fresh driving licence.