Limbo Theorem parts drop bug??

[(PSN)mert21rtr]

Hello i have finished the quest maybe 1 year ago and i liked limbo a  lot and didnt have empty slot to place prime warframe dont really remember which one it was. So i sold him and now i realize what mistake i did . And yesterday and today i tried to farm the limbo 2 times with 2 different people we did the excavasition for the limbo neurosropics first when we finished all 3 excavasitions i saw that it sad that i got blueprint for the neurosropics and then when we got to the extraction i didnt see the blueprint only resorces. So we finished the mission then i asked my friend did he got the blueprint and he sad that he did i was shocked i cheched the blueprint for the neurosropics everywhere and i didnt found it. I was really really shocked because in the wikia it was saying that i can get it by completing quest from other people s quest  . Please fix it.

Edited August 20, 2017 by (PS4)mert21rtr