I would definitely leave them in the containers and keep them moist but not too wet over the winter. Put them in a spot with some sun until a frost kills the Esperanza back, the lantana may remain green longer. Move them to a cold area but protected from very cold (below the upper 20's) so they can go dormant but not be killed outright. Then when the danger of frost is past move them outdoors to where you want to plant them.
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