Maureen,
A forum I am on the members have told me a sharp knife is the best way to cut the plants and you can dry them out for about 5 days or replant straight away. I have just moved about 10 to a new location as I am getting rid of the mother plant from near my front door for something a bit more pleasing to the eye.........(flowering) LOL.
Hope this helps you out,if you email me I'll send you the thread on the forum for dividing/transplanting them.