You can store them right in the pots- trim the stems to a couple of inches, turn the pots on their side so any water can drain & circulation is better, stack them up & store in a cool dark place. When you want to restart them you can bring them out & let them sprout. Then do cuttings again from them. This is the way most dahlias are grown in the UK- they don't even use what they call "chicken legs" & we call tubers. Or in spring if you want you can take them out of the pot, cut them up & replant.
These are "pot tubers" & are what you generally get from the big box stores in a plastic bag with most of them broken off & not usable.

Thank you so much for your help. Suzegarden