Hi Sandy, typically I just cut off the dried out leaves and keep them in our garage. I do not even bother removing from soil. Just keeping them in a dry media. Then I have one amaryllis I have kept year round in a glass container, no drain holes but in a clay rock/water gel media. So far still alive.
But I am making experiments again, watching how far along some of my amaryllis here will really tolerate the cold and at times cold rain outdoors. Those ones also got a dose of coffee grounds in early Spring this year..so still watching how that affects the growth. I did notice the leaves have been much better in growth even though it was so dry here.
Then got two planted in a clay container I brought in the garage, just a spare in case something goes afoul on those outdoors this winter. I was not planning any new blooms or to force bloom any of them this winter..but this one I kept in the garage, is awake now, feeling sorry for it, I brought it indoors to see some light. So will see how it goes.
the newly awake one
and the one living in a glass container - I have a rather long, separate thread about this one, just watching how far along it will go in this set-up, started around Nov 2011, with transitions of different glass containers along the way, so it is like a toddler amaryllis, being 4 years old.