I'm running what I'm pretty sure is the newest build, with all expansions.
When viewing an enemy planet where I have a scout, I get a green box in the upper-left corner. It includes a line:
X [Wave] Y [Reinforce] Enemy Warp Gates At This Planet
I'm confused. The planet I'm at is showing X=1, Y=3. There are 0 Warp Gates, (I killed it) and 9 Guard Posts, of various types. What information am I supposed to draw from the quoted line of text?