I know in my experience that chickens will stop laying if you move them to another coop or another flock. They generally will not start up again until they are entirely comfortable with their new surroundings. So, a move will stress them.
Also, their nest box is another consideration. They tend to like darker, private areas to nest in. Not in direct sunlight.
Were they on any artificial light? If you reduce or take away their lighting, they will also stop and not start up again until lighting is returned or increased. Natural light will start decreasing soon and they will start slowing down, then molting and then likely will not lay until after winter solstice when daylight starts increasing again. Putting them on artificial light (must be warm spectrum) after they finish molt can get them back to laying during winter months. Usually takes 14 or 15 hours of light a day to get them started. Downside is they usually will not lay as much as they grow older.