Hashim bhai, baba-e-quaid. Aur kuch nahi, sub khud ba khud clear.
Thats the biggest reason no one wants a duplicate card or file.
Just a small similar yet different example, i once bought a car, whose offical owner had 2 ID cards(something that i learned after i applied for transfer), aik ghum gya. Dosra banwaya, pehla mil gya, dono use karna shoro.
He gave me the old card for transfer, case submit, haulted after a few days, upon enquiry, fraud ka fine lag gya, i called the fellow, he said, oho, acha, mein ap ko dosra daita hoon, ap un ko kaho k fraud k lye mujhe pakray.
Bakay ap khud dekh lain