When you attempt to move a folder that has a sub-folder with maps in it, the sub-folder with the maps nor the maps do not get moved. Then, when you move the specific maps folder, it will create a folder where you are trying to move it to, however, it does not move the maps / levels; they must be manually moved over as well.
For example, if I add the First Person template into a new game, then try to move the FirstPerson folder to another folder labelled “Third Party”, it will copy the entire folder structure and assets, with the exception of the Maps folder. When I move the Maps folder to Content > Third Party > FirstPerson, it will create the sub-folder, but not move the maps.