Can I submit Ds-160 multiple times?How days prior to interviews date I have to submit

[communicator]

Hi,



I have my interview scheduled with US consulate on 26th Sep 2013 in Calgary. I have already submitted my DS-160 twice. I have to update my employer address with suite number now. Can I submit DS-160 one more time at this point. Does my data get updated with consulate if I update my address now?And How many days prior to my interview date i can submit DS-160? And Do i need to take all my previously submitted DS-160s with me while going to interview?



Thanks.