I have noticed that if I put an limit order in at a certain price and then I go to work, I come back and my order is not visible on chart trader anymore. It never got filled because price didn't reach that level but why has the order dissapeared altogether?

Or If I'm in a trade with an ATM strategy and then I go to work and come back, I'm still in the trade but my stops have dissapeared. Does this happen to anyone else with NT?

perrysingh 

I have noticed that if I put an limit order in at a certain price and then I go to work, I come back and my order is not visible on chart trader anymore. It never got filled because price didn't reach that level but why has the order dissapeared altogether? Or If I'm in a trade with an ATM strategy and then I go to work and come back, I'm still in the trade but my stops have dissapeared. Does this happen to anyone else with NT?

Are your orders set for GTC or Day ? If they are set to 'Day', then they would be cancelled at the end of the trading day which might be ~2 in the afternoon for you.