In one of my games I'm using sats as border guards. Ships warp in, they don't warp out.
On one point I have 22 sats. At least that's what I SHOULD have, and that's what the main screen says. But in the sector view, and in combat, I have only 3..
In another hex, I keep moving sats closer to the WP, and the next turn POOF, they're in another spot. Maybe the ones on the first point migrated away.