Elite: Dangerous PvE - Mobius

So I'm probably the only one who didn't know this, but in case it helps...

Took one of the recovery missions, the ones that say 'there has been an accident and we need you to go recover some personal effects'. After travelling the 100+ly to get there, I picked up a canister of personal effects from a WSS, flew the 100+ly back only to be told I still need to collect the effects?

Due to various time constraints I had to abandon the mission, but I'm guessing I should have collected the canister from a 'Salvageable Wreck' not a WSS.

This might help someone from making the same mistake.

I did one today that was wanting black boxes. Went to system.. saw "salvagable Wreck" jumped in 2 black boxes waiting.. grabbed em and headed back.. kept being called a smuggler but they said "legal salvage" and all scans came back clean.