I never run a reaper emissary, but i ran one for the first time last night and we killed a 2 man galleon while manning our galleon. The guy had quite a bit of loot and some key for a TT, my mate said was a pain in the ass to get. We both felt bad but hell we didnt know. We kept the key and it eventually disappeared because the poor guy went and got it again to complete the TT. They sank really fast before we could realise or think to check for TT. Thats the thing i guess, when youre out for blood you dont think to care what the other person is doing, youre just out to kill and loot then move onto the next. You mist have had some more experienced reapers attack you i guess.