I found lots of sites and checked out a few. One of them said they suffer below 35F and the other said 28F so I wouldn't think they'll be hardy for you. As for digging them I don't think it would be beneficial to you since sometimes they sulk when moved and don't bloom for several years and at least a year. Sorry I can't be the bearer of good news. I know these don't look just alike but a thought may be that you could use Cleome/spider flower in place of the lycoris. They're really pretty and have those little spikes sticking out and come in several colors.

Nancy