I don't even need to go through all 4 stations. On stable version i find target tdc depress to get coordinates hit undesignate then go to next target and tdc depress and undesignate. If i swap back to the first station the coordinates are the same as the last station i did. This happens with 2 or 4 stations on aircraft. It always uses the last tdc depress on all stations. On beta it works just fine using exact same method.