@Minicopilot,
I see you are a new member, so welcome to the forum. I am not sure how familiar you are with the parts of a daylily. When you say the whole root system was cut off, do you know if any of the crown was left with the foliage? If not, then the plant will die. If part of the crown was left and maybe some small part of the root the plant has a chance, but you will probably be lucky if it lives.
