Property values are saved in the ADE file. Airport Design Editor will read values for Color and Brightness from a bgl file but will always default the separation to 200ft. That is it does not read the information from the bgl file. This is because of the way that ADE calculates separations. Values for each string can be slightly different also they are generally slightly below the specified separation. Repeated reading and writing would soon result in spacings of a few feet! As stated in the property dialog these properties apply to ALL apron edge lights