gone from crusade. there was a mod or a few mods that brought em back over on nexus.

I think maybe they "replaced" them with that one mission you can build at shipyards; the salvage mission that goes and looks for ships. That is just my guess. It is kind of hard to tell if what they do with the anomalies is planned or just broken accidents. Like there are still a lot of the anomalies that say something like it helps your research "grow by leaps and bounds", but it doesn't actually do shit.

I've not seen a ship graveyard in quite a long time (without mods).  And I play obsessively, so I think they were taken out.

In the base game you had precursor abomolies, regular anomolies, and guarded anomolies i think they took put the guarded anomolies to make room for other stuff.

Yes they disabled ship graveyards a while back ago. Several mods bring them back, including GRM if you're interested

Thanks