What is the visual difference between Sonobuouy active and passive in the map

[Sys1811es]

When I launch a sonobuoy passive or active, the representation in the map is the same, the system puts the letter "P" in the circle, only change the angle over or down the circle about the deep of this.
I think that in the past, in the previous version, when I launched an Active sonobuoy, the icon was the letter "A" in a circle.