While playing the void sabotage mission on stribog I quickly headed to the objective area to kill sprag and venkra tel. There were no issues that I noticed till this point. I jad just completed a successful run on the exterminate mission at oxomocco. Earlier in the mission I completed the nightwave mission to tag mods/resources.
Both Sisters spawned at a point earlier in the level which I could not access as the void key must be inserted into the torsion beam device to return, however the void key is gained from killing these enemies.
