You may ask it from the landlord itself as it is your right to have copy of lease agreement
Firstly you can ask for your landlord if they refuse then you can take some legal action.
It reminds me the days when I was asking the same question. Glad to see here the experts opinions and recommended answers. I feel easy to play real-money online gambling out of my boring routine which provides me entertainment in my home.
Now to answer that question. All you can do is see if you can get a copy from the landlord other then that keep looking for your copy. If somebody asked me what you wanted with old system we used l tell you to forget it. I did one time do it. Spent several houres locating a person that lived in an appartment severl years prior but that was for the police.