Adding those moving walls destroyed our backroom efficiency. We have a busy store and a tiny backroom. All the busiest backroom aisles are in the same moveable group, so only one person can work at a time. We stand and wait turns. Extra time is spent because ladders have to be moved, and walls have to be cranked. All that constant cranking breaks the mechanisms periodically. And we did not gain any space, since we aren't allowed to use the top shelves. Our most practical & efficient ETL left for another store because of the disaster it created.