Yayacupcake and vozier, try it! It takes a little finesse, but does work.
-move a habitat close to your problem area
-tap habitat, then select any dragon in your habitat
-wait for landscape to fade
-tap (x) to close out of dragon window, then quickly tap the deco before the landscape fades back in.
-now that your deco is selected, you can tap "move", then sell or store easily.