They are building the bridge over the pandas, so that is why they were moved. The bridge will start at the end of Tree Top Way. I was told it will have an elevator tower.
Those exhibits were most recently used by the Andean bear. The male bear was moved up the canyon to the wire netted exhibit that once house the old lioness, Tango. The new 18-month-old female Andean bear, Alba, is in the exhibit to the right of that. I am not sure what will go into the exhibits after the pandas move back.