Yes, I understand it is a known problem, that one debris field will prevent player from scavenging another under it. I didn't found topic, that describe next situation:
If player encounter derelict object with guards (like Domain era probe with some derelict protectors) battle he won will create a debris field. If player choose to scavenge initial object it will create another debris field in exactly the same place, making one of them unavailable (did not remember which), unless player find a spot on rim, where they not overlap.
To explain better: after a defender battle choose leave, not scavenge. Wait a couple days to object orbit out of battle debris field and scavenge it there. Two debris fields are now separate.
IMO defender battle shouldn't make separate debris field. Loot should be added for initial objects loot.
