You seriously Believe Pakistan Armed forces Jawans were traveling into Indian Territory With Army ID cards in Civil Cloths Loaded with Pakistani Currency
Soldiers wont even allow any stranger touch their service card let alone carry it into enemy territory for easy pickings.
They could be ex soldiers or something who knows.
My theory would be they are local to the area, ex soldiers, probably working as drug runners now. Probably using their old ID cards in case they come across/ get stopped by Punjab Rangers?