While doing Netracells runs I've killed the Gruzzling, the Whisper and opened the netracell, and 2 out of 3 times I've done this only got 2 out of 3 drops that should have happened. I picked up the arcane that drops from the Gruzzling every time, but not all the times I pick up the Gruzzling arcane i get it on the end of mission screen. Am I missing something?