They are preparing for the new satellite to take over for the existing one at 119. So, they are rearranging the channels around on the current satellite so they will have space in the right places for the new satellite. Once the new satellite is in position they will start transferring all the channels over to it.
The old satellite uses 1,3,5,7,9 transponders for locals, the new one uses 1,2,3,4,5. So, they are clearing out 2 & 4.