You seem to be saying that ships from that faction can be wanted and not be pirates? I have not seen a single non-wanted ship from that faction. So though that is obviously a pirate faction, some ship are simply just wanted? Even though it scanned me for goods?
IMO, this is another of those "Is it a bug or is it a feature?" things.
Used to be that if you took a "pirate massacre" mission you could just fly around the target system, checking out the nav-buoy and RES's, or just stay in SC, and every Wanted ship from the correct faction would show up as a mission-target.
Not any more.
Granted, from a "realism" POV, it's possible that not every criminal belonging to the correct faction is a pirate and therefore doesn't qualify as a mission-target.
Thing is, from a
gameplay POV, I'm not sure that's a good idea.
Also, I can't help noticing that, when you
do get one of these missions where Wanted ships don't show up as mission-targets, you often get
no mission-targets at all.
Also, also, we now have special USS's which are supposed to contain mission-targets but they sometimes don't show up until you relog.
Altogether, I get the feeling that something isn't working as it should be.
There was a similar thing with assassination missions a while back.
You'd arrive in the target system, honk and get a mission-update telling you to head for a specific planet in the system.
When you get near it, there'd be no target POI.
I've heard people suggest this is just "realism" too - sometimes your target just isn't around.
Again, that seems a bit iffy, from a gameplay POV, to me.
Pretty sure that was a bug too, given that I don't
think it happens any more.