Hi, thanks for reaching out!
I'm not too sure what would cause this other than an accidental ent.delete or a plugin misbehaving. I can see the rest of the monument is still there, so it's only the quarry entity being deleted - Makes me think this is something out of my control, the hqm quarry is a whole monument and not a seperate entity in the editor we use for map making.
I'll see if I can trigger a way to reproduce this on my end for now - will let you know if I come across anything, if I do, I'll fix this asap
For now, quick fix is to spawn a new quarry in it's place, might be the only thing we can do mid-wipe.